It's a pretty simple thing. In regards to commerce only a few kinds of laws should be made.
1) Laws that prevent companies from lying. So the consumer buys what it is told. (That said, this should rely to direct lies.
2) Laws that force companies to be transparent. Informed choices are what drive the free market and prevent collapse.
3) Environmental Laws that damage the health of areas. This could just be solved by lawsuits if you have a good enough court system.
4) Basic workers rights laws. (Though probably only in 1st world countries in a lot of cases. Child labor laws in developing countries usually only have the after effect or, a lot more starving children.
The problem is, we've got TOO MUCH other kinds of laws. That makes it a lot different from capitalism. Different laws that coerce the growth and creation of some things at the expense of others.
These laws are the reason for the majority of the economic problems we face today, because they distort production away from what people really want, often to benefit politicians favorite goals.
Any laws, regulations of taxes should at worst be net neutral among equals. An equal sized Solar Company should be taxed the same a an Appliance company a Fast Food Company and a Car Company.
Tax rates should be at least equal on the big companies compared to the small. Preferably it should be progressive, so big companies pay more... AND face more regulations. As small companies are the biggest drivers of capitalism.
The only reason people think Capitalism doesn't work, is because capitalism has been set up to fail due to a bunch of socialist and crony capitalist laws on top of it.
Which are the same thing, since socialism more or less is the influencing of industry by the government. It's just whenever something goes bad, nobody wants to label i that way, because it went bad.
