I think you’re looking at it the wrong way. It’s just an extra that you have for “free”, not a dedicated gaming subscription. I also live in Europe and my Netflix is cheap, so I will have the subscription by default (cause a lot of people in my family watch it), which means I get to try the games for free. You can always just go buy them if you want, from the store.
Hmm, didn’t know that one was exclusive to Netflix. It’s not a universal thing or a rule, cause San Andreas Definitive Edition, for example, is available to purchase for $20. Probably depends on what the game publisher agreed to.