Right now only appealing to developers. There is too much stuff going against Epic Store from customer perspective. I also seen people defending EGS with (Steam was like this at the start). But Steam did not have illegal practices. The best example how to enter market in this age showed GoG. Doesn't create exclusivity (except maybe for old games), there are no issues with hacked accounts or sniffing private data.
Thankfully Epic Launcher will not be required for Pheonix Point, and this only keeps me from not refunding.
Exclusive for 1 year + free DLCs. Yes I understand that steam takes 30%, and Epic takes like what 5%? 12%? but that's sort of breaking the promise.
If not Steam than GoG. In general people don't like/trust Epic Game Store.