>>260229 (OP)
People had more money back then, so they could afford to forget about properties or ignore them Now? Everyone is sliding down the social mobility ladder, so they are looking for any little spec of wealth. If they see an abandoned property, you can be sure someone is trying to get it so they can sell, flip it, live on it, or give it to their kids.
Everything is being squeezed. It's like how you don't see a cumb of food near starving dogs or cats. They eat everything.