Unfortunately, I think that capitalism is here to stay, so things will just get shittier and shittier for everyone. As others responding to the top level comment have mentioned, declining birth rates means more stress on the entire system, where we’ll see more young people without any future to hope for since all their energy and money will be coopted for caring for old people, old people having shittier end-of-life experiences because there isn’t enough money to support them, and countries will not able to support anyone because there’s no investment due to lack of growth.
Re your third point - this is one of the main critiques of Capitalism, the reckless disregard for the bounds of growth.
So in this case, the declining birth rates caused by capitalism might protect us from the reckless growth caused by capitalism. Sounds great.
Unfortunately, I think that capitalism is here to stay, so things will just get shittier and shittier for everyone. As others responding to the top level comment have mentioned, declining birth rates means more stress on the entire system, where we’ll see more young people without any future to hope for since all their energy and money will be coopted for caring for old people, old people having shittier end-of-life experiences because there isn’t enough money to support them, and countries will not able to support anyone because there’s no investment due to lack of growth.