It being free at 1080p does change things somewhat.
But then again next gen consoles will all be 4k.
If your willing to give up the graphical edge, I guess it makes it alot more competitive.
Esp if your one to game more on your phone.
I just dont see it as something hardcore gamers will be intrested in.
There won't necessarily be much of a graphical edge though. Nextgen systems will probably be a little bit more powerful than Stadia is, but we're not talking by much. Stadia is 8TF, PS5/XB2 might be 10TF. Basically if PS5/XB2 is playing a game at 4k it'll have lower graphics settings then Stadia running them at 1080p. And I have no doubt Stadia will be upgraded fairly frequently. That's another advantage of server side hardware, google can just upgrade their hardware. PS5 will be locked for 7 years (with the exception of paying $400-$500 to buy a Pro).
"I just dont see it as something hardcore gamers will be intrested in." - Many probably won't be. Stadia will appeal to a different market than those that are already shelling out big money on a gaming pc or an XBO X. When people are watching gameplay videos on YouTube and have a big "Play Now on Stadia" advertisement a the side, that's going to attract.