If you want to play on your phone, you would use Stadia streaming.
If you want to play at home and insist on local play ... I guess Google could maybe offer some kind of way to play through the Chrome browser if your PC is up to snuff and the publisher is cool with it.
I mean I don't see it as a priority for Google, on the other hand, they're not really "losing" anything by doing this.
That defeats what they are selling us.
You are paying for the Stream and Processing being done by Stadia....if your computer/phone/tablet/TV is doing the processing the real advantage is lost.
Remember all the talk of highest fidelity 4K for Pro?
If you pay for Pro you expect the games to run at 4K.....how many computers can run the latest games with all the bells and whistles at 4K(not many) how many phones you think could even try 1fps?
If you want local play jump in with Microsoft, youll get streaming and local with Gamepass.
Stadia wont have offline play...having it defeats the purpose and brings more headaches than anything.....Stadias server hardware is bespoke, emulating it locally adds extra load on your PC....its feasible but very very inefficient and as I said will bring a million more headaches.
They would have to port already ported games down to single PC level....because Stadia games will take advantage of as much hardware as they need too server side....if you want them to run on a single PC you'd have to code that in.