Capitalism is definitely not the apogee of survival of the fittest from the "evolution theory" side of things, only in the "society we created for ourselves" side.
Extrapolating from our current understanding of civilization and assuming that it will still be capitalism that rules a 1 million year old civilization is not (imho) a valid assumption.
Even now, a mere fraction of that time, we're already kind of predicting a time where, if not for some type of semi-utopian Star Trek'ian society with stuff like basic income, the future of many many jobs (if we agree that jobs/labor are at the core of a capitalistic society) are already at risk with automation and AI.
I think I understood your message and I agree with you, was also thinking the same thing if the premise of me understanding the message is true, we’re losing a lot of value to the society due to capitalism, in terms of philosophers, thinkers, artists and such?