Comparing capitalism with socialism is comparing apples with oranges, it seems to me, but I guess its a profitable subject.
The Governments of all countries, even those claimed to be "Socialist", use capital as a weapon, to keep folk in order.
That is capitalism to me, any situation where capital is used to gain or preserve advantage.
Neither capitalism nor socialism can solve our current problems, as we’ve seen.
A problem we might notice is that in terms of energy, capital is joules, whereas energy from the only source of it, the sun, is Joules per second.
Joules per second, is obviously infinitely more valuable than just Joules.
When we plug into Joules per second, all capital has to lose all value.
So of course capitalists of all countries will resist that at all costs, generating all manner of misinformation, distraction, confusion, embargos, scarcity enforcement, cancellation, chaos, wars, imprisonment, assasinations, torture, robbery, genocide, and pretty much any nasty practice we can imagine, to try to protect their capital.