In contrast, Western corporate execs have an event horizon between "next quarterly reports" and "vesting/bonus period", additionally in any sufficiently large organizations you will have fiefdom fights that are counterproductive to the company at large, and Western politicians can only think to "next important election", so basically a few months as well because there is always an election going on in some state or local division.
We have gotten societally incompatible with not just coming up with new ideas, but with maintaining what we already have. It's like in 1984 - we can't even think of such timeframes any more.
And no, I'm not calling for a dictatorship. I'm rather calling for dissolution of the stock market for speculation, and for consolidating elections to once every four years so that politicians have time to cool down from the constant campaign hype pressure.