Calle is a genius and is pushing this space forward, and Jack has the capital to get it there. Ignore the haters, we can have all the things we want now, it’s just going to take a few iterations and lessons learned.
Neither Calle nor Dorsey can solve the adoption issue, that's something they both struggle with vis-a-vis decentralized projects. Knowing Jack this is more likely to end up as an NFT marketplace app than anything that someone might want to use.
Jack is very strongly bitcoin only & anti "crypto". He sees Bitcoin alone as the Internet's missing money protocol. There is zero chance of what you suggest might happen.