As a game developer, Epic gives more profits than Steam can to developers. That said from a consumer standpoint, the store is slow, laggy, unintuitively laid out, and overall, I don’t think most consumers enjoy their time on the Epic store. I can say the opposite about Steam and Itch. I have many memories of browsing Steam before it got far too big to browse nicely. Steam’s system now makes it harder to just dig in and find gems. They have created tools that attempt to do it for you but it’s not worth it in my opinion.
Itch is much nicer to browse and everything you find is likely some small gem and it just depends on the level of polish to that gem.