Epic introduced the concept of exclusivity on the PC gaming scene. Earlier Steam (which arguably is monopoly) provided option to buy games but those games could be distributed from outside - and many games did so. Right now Epic locks some of the games in their EGS store. Few kickstarted games were "bought" by Epic into (and which I personally backed, but I have no access to unless I accept their conditions).
There is a lot to cover, if you're interested you could probably read a lot about people's game library being locked out due to some arbitrary reasons, cards details leaking out from EGS or people being charged twice and never refunded. Epic is a bully in a sheep's skin and they already proved that multiple times both in general and in direct way.
As for the goal - the goal makes sense for Spotify, not me. I wouldn't condemn them for trying yet I don't have a stake there. They don't do this so that I can pay less, they do this so that they can earn more. I don't see why I should put my mind on helping huge, wealthy company to obtain their goals. Same goes with Apple.