Those things are great. The problem is taxation and regulation. Capitalism, the freedom to buy and sell, has always been a pillar of mankind. When oppressive taxation, regulation and control are added to it, it suffers.
The market is no longer free, so the slaves will continue to find ways to escape.
Well, no.
True capitalism can only really exist when a specific, and historically rather uncommon, group of factors coincide.
Property rights, rule of law, freedom of contract, etc.
The market is unkillable and is always with us. But the market is only one requirement for true capitalism, which is actually quite rare historically.
In capitalism, wealth flows to those who are most efficient economically, with political power accruing to them as a side effect.
Historically, wealth has been largely distributed not as a function of economic efficiency, but rather as a function of political power, which is of course rooted in military efficiency.
The last 300 years or so of western history are the anomaly, not the norm.