There are enormous challenges. Life literally depends on solving them. Suggesting that they can't be solved is tantamount to telling humanity to give up and die.
Not only that, but it is _actively_ participating in the cyberpunk dystopia that they are saying is inevitable. If evil only needs good men to do nothing to grow, problems only need us to give up to become worse. (I'm clearly no poet)
Gates and Bezos did lose half their net worth in divorces recently though.
Entertain the idea that every human has the option to be reincarnated when they die. How many people would voluntarily kill themselves to have a chance at being born to rich parents? It wouldn't surprise me if one third of the world population is constantly killing themselves for that lottery ticket.