The Libra membership list is kind of meaningless, given that none of the partners seem to have any interest of promoting the project... mainly Zuck just asked these companies "Hey, you want to be on a list for a tech project for some free PR?" and until we hear more from the partners there's no reason to take this list seriously.
So maybe they're happy to shut up for now, let Zuck take the regulatory flack, and if it seems like Libra will take off on FB's efforts, they're positioned to benefit from adoption.
Please show me a citation of where is says concretely that Visa/Uber/etc have handed $10M to this project. The Libra project so far is just wishful thinking about things that maybe, might possibly happen sometime.
However, since these rules are supposed to apply to everyone who wants a seat at the Libra Association, I do assume that Uber and Visa are paying the fee.
"Visa announces intent to join the Libra Association"