cons:
- no game ownership, like any streaming
- no game preservation, like any game that depends on servers to run (streaming or not)
- input lag, like most streaming and several server-centric execution games... is this still realistically an issue or has the tech improved enough to make it negligible?
- bandwidth, like any streaming and some server-centric execution games
- high subscription cost, i bet worse than multi-game streaming offers if you want to subscribe to more than 1 or 2 games this way each on a separate subscription
- what was that again? modding?!! is this something i can eat?

pros:
- no anti-cheat running locally on my machine
- ANY operating system will do
- almost any hardware will do

so i hope it succeeds in replacing the current distribuition model for competitive online multiplayer games that use aggressive anticheat, and flunks at everything else