I think Elon Musk is just having fun. He is one of the richest people on the planet and it is quite possible that for him this is entertainment, ridicule. Maybe he's doing it for his own benefit, too. It is also impossible to exclude the fact that he helped a lot of people to earn money
In general, everyone is only concerned about the benefit for themselves even though what they do looks like helping others, even though they are not, because basically no one wants to lose because of something, and if someone wants to help other people in a certain place, it will not more than twice, because no one wanted to help forever.