You can lower costs to ZERO, if there is no demand for your product there is NO PROFIT.
Supply is therefore not the driving force.
Beg to differ, if you lower the price enough, you'll get demand if people want your product or service. You do understand the relationship between price and demand, do you not?
The idea that price creates its own demand is a myth.
Two reasons:
1) The product itself has to have value in order for that to hold true.
This is true, but value does have a direct relationship to the price. Obviously if the product has no value at any price then demand is non-existent, and presumeable should already be off the market.
2) If you lower your price below your cost, you lose money, regardless of how many you sell.
Sure, which is why you want to lower your costs as much as possible, which is supply side economics. Can't believe you are arguing against the idea that a lower price means more sales.
You can create a shortage thus driving up the prices IF a demand already exists, but you simply cannot create demand based solely on supply alone.