He could set a million dollars on fire every day for the next 50 years and still have another million to spend that day.
Just wanna point out that net worth doesn’t equal money in the bank. If he tried to convert his worth (probably NVIDIA stocks) to money it would be very hard and only a percentage of the initial worth (because of shares dumping).
Google SAYS they use the Signal protocol.
Without open-source applications, you have to trust these companies to do the right thing when they can track you and make money from it in every single step of the way. Same goes for Meta with Whatsapp.