You don't really own the games however, it relinquishes user control. If that's fine to you then sure, but I don't want to play games as a service, I just want to play them on my own hardware with minimal latency.
Many games had special peripherals or were impractically expensive for home usage though.
For example, the Neo Geo AES launched at a cost of $650 (~$1300 in today's dollars), with games costing $200 or more back then. Some versions of afterburner climax have a servo equipped chair which can tilt on multiple axes as well as vibrate, police 911 has body position sensors, and many of the music games have hardware that's completely impractical for home.
From that perspective, the games as a service makes more sense. Stadia doesn't really offer any of that, the games are the same as any other platform.
Not really, some games on Steam don't have DRM, and Valve has said if Steam ever goes down that they'd break Steam DRM themselves. This cannot be said of Stadia, I can't imagine Google would refund people that money or give them another copy of their games.