Both are equally difficult. While it's possible to vote in an FDR-like figure that will tamp back on the worst examples of profit driven exploitation of the planet, I don't think it's possible for the system to self-correct without eventually backsliding due to profit motive, as I believe history has shown in every attempt to reform capitalistic societies.

Personally, I think the best way forward for humanity is to build horizontal structures that will slowly replace the need to rely on the state/for-profit institutions, aka Prefiguration. The fediverse itself is a nice example of that happening.