"Free market: survival of the strongest"
Not the strongest. It is survival of the business who best satisfies their consumer. Strength has nothing to do with it. Product quality and price have everything to do with it. Price it too high and people go elsewhere, even if they have the best product on the market. Lower the quality and people go elsewhere, even if they have the lowest price.
Businesses who cannot best satisfy their consumers go out of business and make room for a business who can do it better.
In the end it is always the consumer who benefits.
When controls are put on the market, it immediately causes a downturn in the economy. The business has to work harder to pay for the added overhead and has to make a choice of lowering quality, raising prices or cutting back on jobs.