What small little thing makes you go "Instant no buy for me" in an upcoming game?

[Chazore]

Machina said:

Another vote for Epic (or any publisher store, like whatever EA's and Ubisoft's are called) exclusivity here. If it eventually comes to Steam I'll still buy it, but if it's truly exclusive then it may as well not exist as far as I'm concerned.

It's why I stopped caring about franchises like Alan Wake. Indie games that go there for 1-3 years I'll never buy. The longer and more deals a dev and publisher makes with Epic, the more inclined I am to just avoid them for the rest of my life and give money to someone else who will give me the time of day (This has already led to me ignoring SE, Gearbox, Ubi, etc).