Don't worry. Sillicon Valley will fix it with AI. /s
We'll just have to give up perpetual growth and do more with less. The world population was always smaller than what it is now. What will happen is people from other, more crowded places, are going to move in and no amount of deportations is going to stop that.
I do think we will end up in a de-growth position but I fear what that will mean on a humanitarian level. Not so much a de-growth with social purpose (no not eco-fascism stuff!), but a post-growth with panic.
We'll just have to give up perpetual growth and do more with less. The world population was always smaller than what it is now. What will happen is people from other, more crowded places, are going to move in and no amount of deportations is going to stop that.
https://youtu.be/APo2p4-WXsc