Neither Tencent nor Sony are based in the US (although Sony does have a US subsidiary). AT&T and T-Mobile together wouldn't have been the whole cell phone market either, although consolidation in physical-presence utilities are seen somewhat differently from more easily distributed products.
> Neither Tencent nor Sony are based in the US (although Sony does have a US subsidiary)
Sony Interactive Entertainment actually relocated to California a few years ago and literally everything PlayStation is under them so I'd probably call them a US company at this point.
It's still only a part of the larger Sony, though, with other subsidiaries doing completely other things. They're not leveraging TVs from a US company into the Sony Pictures studios into game development into game publishing into tying the games to the PS5. Microsoft is all one company with divisions working more closely, in theory anyway, than Sony's subsidiary companies.
