[smallnamespace]

To tackle big problems, you need the structures in place to organize people, lead them, figure out not just the grand goal but the sub-objectives to be met, and to reward those who contribute and punish cheaters, and also the money and resources to do all of those things above.

But at this point you're no longer talking about getting a diffuse group of people together who believe in the same thing, but building something like a corporation or an NGO. That can easily take half a lifetime and a lot of perseverance. Most people don't have the time, energy, or money to go that route.

[adverbly]

Except that the structures we have in place have time horizons even shorter than a human lifespan. Stock market runs on quarterly reports, governments run on election periods of a couple years. The organizations we give the most power to just don't operate using long term incentives. And then democratic processes don't even let everyone who is currently alive vote, much less those who aren't born yet. It's a problem that largely requires unselfish thinking which makes it extremely difficult to incentivize.