I'm not too convinced by the relevance of these groupings (GAFA vs Wintel). For one, Intel is a hardware company. And Microsoft seems to do well in a lot of key areas.
Also, isn't Oracle on the same scale as the other that are mentioned?
Also, isn't Oracle on the same scale as the other that are mentioned?
So they make their money selling hardware, but who would buy that hardware if it weren't for the ecosystem? Their software is pretty shite now - major OSX upgrades have the stability of old Windows ones nowadays - but they still take their users' privacy and security seriously, and they have platform lock-in. Their hardware still isn't what REALLY makes them money.
And IBM has been around a long time ... it's just they're no longer the only game in town (though I'm a little surprises HP/HPE/MicroFocus/DXC wasn't in there)