When someone has $200 million in an account they aren't going to go out and say "Hey, I got a tax cut, I can now afford to start my business".
What starts a business is a need. People who have nothing have meet that need.
Yes, everyone is Scrooge McDuck with swimming pools filled with gold coins, I get it.
But the childish fantasy of the left has utterly no connection to reality.
In the real world taxes are very important. Most Communists have never had a finance class in their life, much less a class on basic economics. They can't read a balance sheet or income statement. They couldn't produce a capital investment repayment plan if their life depended on it. But in real life, that's how things work. If I want to expand a business, I have to show that the expansion plan will repay the capital employed, a concept we call ROCE, "return on capital employed". I must demonstrate to the bank or board of directors that the investment will pay back in a certain number of years or the project will not be funded. Another concept that Communists don't grasp is EBIT, which is "earnings before interest and taxes." What follows are two critical elements on an income statement - interest on debts, and taxes. The impact of these two is enormous and heavily impacts any business decision.
Yes, I'm getting into grown up talk, which is not what leftists understand. But in the world of finance and business, this is how things work. If the interest on debt for expansion erodes the payback, if the taxes on EBIT consume the return, then expansion will not happen. The jobs created by that expansion will not happen.