Stadia runs on a subscription service, so you pay monthly, rather than per game. They could quite possibly run different levels of subscription, like Netflix does, and have a premium service for 4k gaming and latest releases, and a lower subscription for 1080p streaming and releases 3+ months old or something.
I would expect prices to be $20 a month, as other competing services charge the same, and I think anymore would be viewed as unreasonable.
Wikipedia said:
Reviewers reported that the streaming service had low latency and felt as if the game was being played locally.
[8][7] Depending on Wi-Fi speeds, however, the game sometimes compressed its
screen resolution or lagged.
[8] A test by
The Verge found no lag issues over a wired Ethernet connection, and occasional stuttering on a shared Wi-Fi connection.
[8] However, even on a wired connection, the stream did not output at 4K resolution and occasionally went fuzzy with compression artifacting. The reviewer reported the best experience on Google's
Chromebook Pixel.
[8] Polygon found the service's audio compression noticeable.
[7]
But if tech companies can't achieve 4k over a wired connection, the chances of any of us being able to stream games in 4k to our houses are slim.
Google also definitely need to announce a mass amount of games soon, as right now, they're saying they're launching within the next 9 months and currently have 2 games announced for their system, one of which is old and most people who want it already have it. They probably want at least 100 games on the service at launch to give this a chance at working.
As was mentioned above, turn-based and slow-paced games might work with this, but if you try and play any reaction game or any form of twitch-based shooter (Basically any online shooter), then Stadia is definitely off the table for the vast majority. I think it has merits, you can pay a subscription and basically pay for your console in instalments as it were, rather than paying a huge lump sum. But it also has the disadvantage that PS+ has, in that if you ever stop constantly paying them, they take all of your games away from you.
So do you pay $20 a month (The expected pricing) for 6 years (The lifetime of a console) which = $1,440
Or do you pay $400 for the console (brand new), and get 17 full price ($60) games for it, which = $1,420
And remember that you get to keep your console and games with the bottom option.
It depends on how much gaming you do, whether or not you have owned/paid for that many full price titles on your PS4/XBO. That's full price meaning you didn't get it discounted, and you buy all your games at the $60 RRP, which is unlikely.
I know I've owned my PS4 since 2015, bought it for about $250, and have spent about $160 on PS+ and about $300 on games. So in 4 years I've spent about $700 on my PS4. So in my case, Stadia would be a more expensive choice ($960 for 4 years, not including any hardware), as I don't buy many full price games, I wait for sales and get them for $20-30 or so.