Of all the subscription based services that exist and fucking suck, this is far from one of them. It’s a great value for what you pay if you’re actually interested in lots of games. I can end up playing everything that comes out in a month and end up paying less in a year than buying those games outright in that single month.
Similarly, PS+ Premium, which I spent $120 for a year and it paid for itself within a week as I installed and played through 4 different games that would have totalled twice the subscription I paid. (4x$60=$240).
A better example would be the subscription cost of a single MMO like World of Warcraft. You pay the same monthly/yearly fee as GamePass. For one game. One game that is old as fuck and not really too relevant any more, at that.