Earlier quoted context omitted.
If google were going out of business I'd agree with you, but they're not. As a business they have plenty of money. What they're (possibly) doing is shutting this service to save some money. I suspect they'll refund or at least credit the relatively small number of people who purchased games on the service. It was always an odd setup to sell something for a fixed fee that potentially has an endless cost to deliver. Go…
I doubt they'll credit anyone. Why would they? You purchased a license to play a game through their service. Their service is no longer there. I haven't gone through any terms of service for Stadia but I can't imagine that they aren't covered for this.
I used the service and as a techie knew it wasn't really sustainable but the average consumer buying in good faith wasn't warned that their purchase might be so short lived. Might have been hidden in the TOS but that won't cut the mustard in many jurisdictions and will be an expensive battle.
I suspect they made a small amount of sales and it'll be cheaper and easier for them to credit than fight.