Ideally this legislation would also prevent Walmart from minting their own currency or opening up their own bank (conveniently placed in their stores and available on their website). My understanding is that Walmart is more like Amazon-plus-physical-stores at this point; they do not yet provide their own bank. If they did, maybe they could be cast as a "tech company".

IMHO, the concern over privacy is _my_ concern; I'm not sure it's something this piece of legislation is worried about. Based on the article it seems like the concern here is more about Facebook creating their own currency and less about consolidation of people's private data. I would guess no one in government likes Bitcoin much and it's one saving grace is it's lack of widespread popularity among the general population. Facebook could conceivable make Libra so easy to use that it could turn into a real thing.