Government regulation is the route to go for the edge cases where capitalism incentivizes dark patterns. For cases where an endeavor is unprofitable, government investment is typically the way to go, and seems to work rather well (eg NASA and the many inventions that came out of it, that arguably form the basis of our modern life.)

I am not calling for unfettered capitalism, but I do think we have struck a somewhat happy medium today compared to almost any other point in human history. I think it can be improved further, but I see no evidence, historical or otherwise, that communism could fare better.