A house exists, in order to remove ownership of that hous you would need to physically expell the family living there. A story is fictional, it does not exist and removing the copy protection from it does not require actively harming the inheritors of the person who wrote it.

A house is also not so much generational wealth as it is generational ownership. You don’t get active revenue from a single house if ypu are living in it. And generational wealth is pretty fucked up and should not happen.

Besides if an author really wants to make sure their children are taken care of, teach them to continue the story, the family name will ensure they get more sales than anyone else writing stories in the same universe as the original.