EA Play is coming to Xbox Game Pass next month too.
The game pass is also available for PC with even more games available like Flight Simulator 2020 and every future Xbox exclusive will be available here to play if you aren't intending getting a Series X/S. If you have a gaming PC and then get a PS5 on the side, you have all bases covered pretty much. Ubisoft also has it's uPlay+ on PC which works the same along with EA Play as mentioned.
I'm afraid not. You merely use the pass which enables you to access the licence(s) of the available game library whilst the pass is active. If you wish to own the game (licence) outright, you will have to purchase the game.
As with all these subscriptions though, you will have to put up a payment method for a direct debit which is automatically deducted until cancelled. Prices and content can change without notice.