The "average" gamer/consumer doesn't want to fuss with any special gamer hardware or upgrading PCs. They may not even know what a GPU is. And they probably accept that there are lots of things that they can't do with bad internet most of which they care about a lot more than games.
The idea of Stadia made a lot of sense to me when I first heard of it. I guess the implementation wasn't very good though.
They tend to be playable offline, but yes. The average player has zero interest in having a gaming PC.
Of course, the average consumer has also never heard of Stadia. I've barely heard of it and I was at the Google Cloud event where they either launched it or gave it a lot of air time.
The idea of Stadia made a lot of sense to me when I first heard of it. I guess the implementation wasn't very good though.