If we see the overlap between the console and PC markets we see that most PC players don't play on console and that most console players don't play on PC.
Meaning, most PC players don't play on console because of other reasons, not because a few ports. In the same way that most people play on consoles for other reasons and won't stop doing it because a few games get ported.
Regarding 3rd party support, it is one of the main reasons of why Sony kicked out Nintendo out of the home console market. And will be one of the main reasons of why in the long term PC handhelds will cause Switch 2 not being as successful as Switch 1 (despite having a record launch), and a generation or two later will kick Nintendo out of the portables market too.
Meanwhile, Sony will continue growing their console, PC and mobile gaming businesses.
This is the top grossing country for the console gaming market. A big contrast to people claiming that PS5 is doomed, that Sony doesn't market their stuff, that Sony has no games and that PS Portal was a failure.