If you think this is unique to FFXIV...your rather ignorant of the market.

Only a few tittles don't require you to buy an extra license per platform.

Not that I'm saying this is a good thing mind you...but your acting like this is a new thing....hate to break it to you...its been a "thing" for far longer than you realize.

PlayStation owners can't play this game without buying a license for the game even if they own a PC version.

Its especially prevalent between console games and computer platform.

Mac is just yet an another platform.