Honestly there are so many levers we could pull off within Capitalism to both meaningfully improve the lives of people while keeping together all the things that are genuinely good about it (such as the central thesis of rewarding risk and innovation).

- better safety nets paid through higher taxes and closing down loopholes (such as buybacks)

- stronger regulatory enforcement to reduce the power of monopolies / monopsonies

- stricter rules around tax-payer investments / subsidies into companies (sure SpaceX gets to have billions to shore up our competitiveness but there must be a mechanism for the tax payer to have board representation)

etc. etc.

The list goes on. Honestly it doesn't take a lot (besides political will and escaping the capture of Citizens United) to move the needle so that the median income or bottom 10th percentile lifestyle meaningfully improves while we no longer have wealth horded to the level of having centibillionaires.

It does require a government that operates with much less corruption than we have, so it is more idealistic than not, but very easy to imagine.