JRK.
Capital only invests in job creation when there is sufficient demand. Indeed: when the middle class has money to spend, capital does miraculous things to capture that money (including adding jobs and investing in innovative technology).
When the middle class lacks money (because wages, benefits, and entitlements have been cut in order to enable tax cuts), capital must find different investment opportunities for its surplus. This is what we saw in the post-Reagan, low wage, globalized economy: surplus capital, lacking an incentive to add jobs, was increasingly diverted into speculative instruments (hedge funds, derivatives, etc), which builds dangerous risk into financial markets. This is what we saw during the Clinton and Bush years where the over-concentration of surplus capital ("profits") created by the Reagan tax policies so clearly lacked sufficient investment opportunities in the real economy, which is why it took flight into tech IPO's and mortgage derivatives.
[If you lower the compensation of your workers, you are destroying their ability to buy your products. If they can't buy your stuff, you have no incentive to invest in the real economy (because nobody can buy anything), so you end up with a massive surplus with nowhere to go, which surplus inevitably ends up at Wall Street, which lacks sufficient investment opportunities (because there is no demand). Thus, Wall Street, in order to handle the massive capital surplus of Reaganomics, is pressured to create ever-better returns; therefore, it invents phantom speculative instruments which ultimately destroy the very capital which was meant for investment (-please study the Tech IPOs of the Clinton years, or the credit default swaps of the Bush years). The Bush tax cuts didn't go to the creation of American jobs (because there was no demand to capture); Bush had the worst job creation in the last 1/2 century. Those tax cuts went to speculative Wall Street garbage, and the result was catastrophic. Study the "Greenspan Put"]
but it gets worse....
What happens when consumers lack sufficient wages and benefits to buy things? [Remember: all the money they used to get (in the form of wages, benefits, entitlements, public education, etc) was cut then transferred to the wealthy in the form of tax cuts] The middle class consumer, now without sufficient economic security to consume, must increasingly rely on credit cards to drive consumption. When they max out their credit cards, they turn to their homes for money. When their homes crash they finally stop consuming. And what happens when nobody goes into shopping malls and buys garbage? Spiraling job loss. [we built a consumption economy from the surplus middle class wealth enabled by postwar wage/benefit policies. FDR put money inside the pockets of the middle class, and capitalists were forced to innovate like crazy to get that money. Then Reagan got rid of the wage/benefit policies of FDR, and he (along with Clinton) freed capital to go to the 3rd world for sweat shop labor. The solid jobs that once enabled high levels of consumption were destroyed.
So we entered the mid 90s with a consumption economy that required high levels of middle class spending, but we enacted tax, labor, and entitlement reforms which destroyed the needed demand to drive that economy. So we created debt gimmicks to sustain consumption. We used everything from credit cards to our houses to compensate for the fact that the historic surplus on top was not trickling down to middle class demand. And at precisely the moment that we need demand-centered policies, we still have a group of talk radio morons parakeeting economic theories which made sense 30 years ago.
Reaganomics, which was absolutely necessary 30 years ago, has been over-applied. It no longer has the same utility because the problems are different. Capital has nothing solid to invest in (because it lowered the wages a.k.a. buying power of consumers), while the consumer lacks the money to buy even basic staples without unholy amounts of debt. On the investment side we have dangerous speculation, on the consumption side we have dangerous debt.
When surplus capital has nowhere to go but dangerous speculation (because consumers don't earn enough to consume), you need policies which bolster demand so you can attract investment to the real economy. You need another tool besides supply side economics, which assumes sufficient demand
The OP keeps repeating tired talking points about how we cannot tax job creators. His criticisms of Keynesian economics are old. We get it. But, this is no longer 1970 when Labor's advantage over capital created massive efficiency and competition issues for American capital. Today we have a much different problem. American corporations are sitting on more surplus than at any time since the Gilded Age - and they have benefited from 30 years of deregulation. They have captured every regulatory body through the meticulous application of lobbying pressure. Their effective tax rate is lower than any advanced industrial nation (corporations like GE and Exxon don't pay taxes; they are heavily subsidized. They own both parties. The wealthiest Americans don't pay income tax; they make their money in Capital Gains, which means they pay lower taxes than their workers. The OP never mentions any of this stuff because he gets his information from talk radio rather than non-political peer reviewed sources).
Giving corporations more tax breaks won't lead to more jobs or innovation. Why? Because you cannot fix a demand problem with tax breaks any more than you can solve inflation by lowering interest rates. 30 years of lowering middle class wages, benefits, and education/health/retirement programs has left them unable to consume. You can't solve this problem the way Reaganomics has always tried to solve it: credit cards for the serfs and tax breaks for the Lords. This recipe has destroyed America. Unless you find a way to recapitalize demand like you recapitalized the suppliers in the 80s, the current problem will only get worse.
Please don't get your economic theory from talk radio. You are clogging the debate with garbage