I think the idea is they are too lazy to work for rent. If they really wanted they would go to work and not be homeless anymore. And if they are not able to find any job, they can always do forced labor in a prison system. That’s how it was in the USSR. People in power really like this kind of a system

This is a very dangerous way of thinking. You cannot tell at the time of discovery if specific research will be useful or not down the line. You need to advance the research in all directions, even if some of them seem silly or useless, or else you will handicap your progress in other fields which you didn’t see the connection with at first.