You horrid cow.Just because people live in a place for 30 or 40 years as tenants doesn't mean they have a right to stay there.
First, read up on the laws of NYS and you'll find that they DO have a legislated right to continue to live there. And they can pass the units on to their children and other close relatives who might live with them.
Second, cry and moan all you want. Wrong is wrong. You're just so wrong in so many ways. Keep crying about how your money gives you more rights. Cry yourself to sleep. Then do us all a favor and don't wake up.