This is surprising IMO, the trend the past almost 3 decades (since the Clinton administration) has been to give the giants a free pass on almost everything. Bush ended the case against Microsoft, and since then there has been zero big case victories for competition and consumers that I can remember.
Maybe pressure from Europe helped, we’ve seen a lot of high profile rulings from EU, so maybe it’s “get your shit together, or we will do it for you” kind of situation?