> I don't know what the solution is in the US (and West in general) to be able to think 25+ years ahead, as no material incentive would do the job
Eliminate share buybacks. Raise the top tax bracket to 95% on earnings over $10m. Executive shares cannot be exercised until retirement if you really want to get aggressive.
The nuclear option would be stocks cannot be used as collateral for loans, it would shore up 90% of the nonsense overnight and have 0 negative impact on 99.99% of the general public.