I am not sure why you argue for capitalism and then want the government to interfere with small details such as this. Why would the government deal with things such as minimum salary?

There's plenty evidence that uncontrolled capitalism creates a few very wealthy individuals and lots of others barely scraping by, often holding multiple jobs. The US is not a great example that everyone benefits from capitalism, too many people don't.

Economy and energy availability are highly correlated. It could be that any system, under abundant energy, would grow. You have to demonstrate that capitalism grows better than others under restrictive conditions, which I haven't seen any evidence for. We have had exponential growth in energy and resource use for over 100 years. Under that regime, it's hard to fail. Except it seems we are now reaching the limits.