Okay, one thing I do know for sure is that anyone that's creating cryptocurrency is doing it for the purpose of making money, even Facebook is not doing it for free, they are after the cryptocurrency business and how much they can make from it. But the money they make money is not pulled out of thin air, if it is like that, then maybe you should try pulling yours out of thin air as well. The coin is a stable coin and is going to be pegged 1:1 with the US dollars just like other stable coins are. That's why most institution are adopting it, if it wasn't stable they wouldn't have adopted it.
True, this coin will not return more value if you buy it. So this libra coin is purely for Facebook only for their business currency. Maybe only institutions will adopt it, bitcoin investors will not switch from bitcoin and adopt this stable coin.