Why is the old saying: high-rise buildings are built by the poor, and the rich laugh at the poor and worry?

The ancients said that such a thing is an accurate summary of social reality. Since ancient times, society has been like this-all the people who own tall buildings are rich, and all the people who build tall buildings are poor (laborers). Rich people don't have to worry about food, clothing, housing and transportation, so they laugh a lot. Poor people don't have safe and comfortable accommodation, so they worry a lot.