Again: what has capitalism to do with ownership, or a market?
Do you want to call the middle ages capitalism? In a certain sense they were. Could a random person own a random thing? No.
Often even the possession of gold was forbidden.
Were the markets free? Not really. Most of the time prices were set by "agencies", a guild or something like that. Lots of trade was barter trade.
So: even with capital, you could easy just found a brewery. Or have grain mill, or god forbid: a mine.
The critics on capitalism came during and after the industrial revolution. Money gives to much power and makes it easy to have wage slaves, people in bad health, treat the environment like shit, have real slaves, exploit resources in ways that are not good, who cares if a mine later collapses and then towns above them crumble ... you can make corporations that shield you from liability, in some countries you can make corporations where the owners are unknown ... and so on.
Capitalism basically means you can abuse the power of having capital unrestricted.
I can buy ALLL the food, and burn it up, and the rest of you useless scums, starve to death ... until [give me what I want]. That is capitalism. Now you can say: free markets make that difficult.
But in those times we had no regulated free markets. And if you want to play the game a bit bigger, you invest capital into something that is quite common, perhaps under valued, and: start a war.
You idiots who mix up all the *isms have idiotic ideas, for example that an "anti capitalist" is against free markets. Only Russia after WWII and parts of its block tried planned markets. And: how far did that go? It is a no brainer that a planned market can not work, and that free market - albeit regulated - is a corner pillar of a modern society.
All other communist countries either had no markets at all - see Cambodia - or always had free markets, see China, Vietnam, Laos.
And the problem is not capitalism versus whatever*ism, it is the idea that rich people have political power. China is proud that rich people in China only have the power they acquire by being members of the party, and be voted into positions inside that party, by other party members. And have otherwise no power at all ... as they can not run around outside of the party and do "politics". Sure, they are rich and there is corruption ...