Sadly, I think we've already seen how things will go.
As soon as the game launched, the majority of my friends list ran to purchase the game.
As usual, it seems people are bothered by these practices, but not enough to skip a fricking videogame.
Release a game a year later, for pretty much the same price (or higher, under the justification that it has more content now; any developer that updates their games with new content, say the Grim Dawn developers, should start increasing the price of their games, even if it's years after launch
), and people will still buy it.
Because, just think of the poor developers!
The guys that took these deals really got the best of everything: they got a significant amount of funds from Epic, possibly some more funds from sales on their platform, a lot of free publicity from the exclusivity deal (and the "backlash" that followed; I say "backlash", because let's face it, by now it's clear it was less of a backlash, and more of a twitter "hissy fit", since most people never followed through with their boycotts or promises of "ignoring" the developers), they got to have a second launch (after the exclusivity period was over), with healthy sales (as if the game is not a year old product), and they'll surely get the usual later income from discounted sales + bundles.
Meanwhile, those indie developers who didn't "win the Epic lottery" are left with barely any publicity/visibility, and struggle to get any sales on they one and only launch, let alone a year later.
People complain about industry practices, like microtransacions, pay-to-win mechanics, platform/retailer exclusive content, and whatnot.
But, they end up supporting all these. Why would these developers, or publishers, change anything, if no matter what they do, people will keep purchasing these games and content?