How many families buy houses for their in-laws?

I think less than 10% buy houses for in-laws. Because there are too few such people. Unless she is a dutiful son, this daughter-in-law will buy it if she is too filial. Generally speaking, she won't buy a house for her in-laws without money. There are such people, but few. Usually. Let the family give it to him and let the old man buy him a house. He bought the old man a house. Unless his family is rich.