Let's say there's two stores. Facehugger's Emporium of Emporia and Indulge's Indulgences. Now, the local gang comes by and threatens to torch both stores if we don't pay them for protection money.
I pay. You do not. The next day, Indulge's Indulgences burns down.
Would you be happy if I told all the customers who wanted to go to your store "Don't blame the gang who burned down your favorite store, blame Indulge, who didn't pay his protection money!"
The specifics of the situation here are totally different, of course. However, your underlying logic is the same between both scenarios, which, frankly, makes it invalid. Unless you agree that I'd be justified in blaming you for not paying protection money.
If Porche comes out with an mags which were designed exclusively for Porsche and I drive a Mercedes, and they don't fit the Mercedes, I can't get them and the company that makes them for Porsche won't make them available for any other car because they have a contract with Porche that is binding. These sorts of business transactions take place all the time. Eventually Mercedes will come out with something similar to make me happy. Of course, I would be happy to own either one. But still....it's business deals and that means someone paid Bethesda something extra for some exclusive content. Sony could do the same and then may at some point. We just don't know.