@lashman Honestly, they're already defying my expectations!
I expect Epic to do well in the future, as Fortnite players age up, just as almost everyone who ended up with Steam as a result of buying games that contained Steam codes ended up a loyal customer.
But I'm also starting to wonder about Epic's commitment to a digital storefront for downloadable software, as they've been streaming a lot of different gameplay modes (different enough to be stand-alone games) into Fortnite and its launcher, which makes me wonder if Epic will pivot to an online-only instant-download model like Roblox before EGS actually gains significant traction a few years down the road.