How much of this is actually new as far as income vs costs, and how much of this is unwillingness to make sacrifices that older generations did? For example, in my 20s (20 years ago), it was very common for 20somethings to live in shared housing with 2-3 roommates. They would share kitchens, fridges, everything. And these houses weren't even that great to begin with.
Is the younger generation less willing to do things like that? Or move further out, or move to a smaller town where the prospects are better? Are the prospects actually there in smaller towns? They might be more with remote work now.
Like I barely hear about families moving to different cities for a job anymore when that was more common growing up in the 80s.