If I may, it does depend on which definition of capitalism a person is using. It is a highly elastic term.

I definition I prefer is 'mass production for sales in geographically expanded markets'. Defined that way, capitalism is as old as the days of the Silk Road, etc. In Modern capitalism wage slavery (being paid to be used as machines — or draft animals) replaced bondage slavery and serfdom as the source of labor for mass production.

That also allowed 'the masses' to start buying things they could never have acquired previously. The point is that mass production--'capitalism'--is necessary for there to be enough of anything for everyone in the world in which we currently live.

'Capitalism' is not the economic system. The problem is that system, not the existence of mass production. More accurately, the problem is the way that system has been utilized.

I did discover a way to utilize the existing economic system (specifically, supplying the economy with money) in a way that would solve the following problems for society: unemployment, poverty, unsustainability, and even taxation/public debt.

If curious, there is "Economic System Not the Problem: It just hasn't ever been utilized as well as it could be" (here in Medium, but not behind the paywall).