That doesn’t really address the fact that capitalism, by definition, consumes more than it creates and given time it will corrode the “socialist” elements out of existence–like it has been, and continues to do the world over. Even places with well-functioning social support systems have seen capitalist influence foment public hatred for those systems by intentionally breaking them and then metaphorically pointing and shouting, “look at how broken this is everybody!” That simple technique, getting into a social support system and intentionally turning it into a dysfunctional mess in order to drum up support for its destruction, has been extremely successful in many parts of the world.
Capitalism is built on some fundamentally broken notions, not the least of which is the idea that scarcity (of materials, goods, skills etc.) is what makes things valuable while simultaneously requiring an infinite amount of it. You can’t have infinite scarcity, we will eventually run out of things to sell and elements of our lives and culture to monetize. One could even argue that we’re already seeing this happening with the “serviceification” of everything from software to underpants–you can seriously subscribe to underpants now. That’s not innovation, that’s lack of ideas resulting in the remonetization of something already monetized. Similarly, it’s not enough to simply display advertisements anymore, now advertisers need to creepily peer into everyone’s personal life and pass those observations on to yet more people for money.
There’s also the fact that capitalism depends on competition, competition is universally less efficient than collaboration–a point clearly demonstrated by the prevalence of both implicit and explicit corporate collusion–while we live on a world with finite resources. Sure, there’s asteroid mining, but how long until we get there, and who gets to control it? Do you think that the 40-some years that the two most powerful countries in the world held the world on the brink of nuclear destruction helped or hurt that?
What happens under capitalism if, say, we towed a few gigatons worth of precious metals back to earth, rendering them effectively infinite at our present scale of existence? This is something that capitalism sees as a bad thing because it instantly devalues the stuff already here. What would happen is that whomever managed to bring those materials back would first flatline the price, destroying their competition, then raise it to whatever the hell they wanted once they effectively controlled the now single economically viable source of those materials. The sad part is that’s better than what will likely happen, which is that we’ll never get that far because this is already considered a nightmare scenario by capitalist standards–something that is itself proved by the fact that we have more than enough food to feed everyone on the damned planet every damned day, but instead we just throw a bunch of food away and let those people starve because otherwise we’re undermining the value of the food.
In fact, there’s a pretty succinct example of what exactly is wrong with capitalism: it’s a system that throws away “unused” food while people starve to death in order to preserve the value of said food. Capitalism not only makes people think that’s a rational way of thinking, it makes them think it’s a moral way of thinking. All it has to do in order to get people thinking that way is implant the simple notion that it’s “unfair” for people to be given food, or clothes, or housing when they need it, but can’t afford it. It never willingly bothers to ask whether or not it’s fair that we just let some people starve and when the question is forced, capitalism provides a “moderate” solution of “we just have charities for that sort of thing” which isn’t meaningfully different than saying, “not our problem.”
The balance you speak of probably doesn’t exist, because capitalism is a dangerous, selfish ideology that necessarily values inanimate objects and abstract concepts over human life. That’s not a way of thinking that is conducive to humanity surviving the next 500, or even the next 200 years.