No they won't, not if they have just enough bread and circuses and someone below them to hate. Boil the frog slowly enough and it'll work out just fine for the capital class.
Yep. Evolutionary way to get to communism where "from each according to his ability, to each according to his needs" [1]
[1] "https://en.wikipedia.org/wiki/From_each_according_to_his_abi...", circa 1875
Bread, circus, strife, anger, hopelessness, antinatalist cultural products and it doesn't need anything aggressive or spectacular. People will just cease to reproduce seemingly of their own will. South Korea to the nth power.