From GI.biz: “While Steam has long been the go-to home for the PC player base, the proliferation of other platforms, notably the Epic Games Store, has encouraged developers to think beyond Valve’s offering as their PC platform of choice.
But, as seems to be the case with many aspects of game development, launching on a new platform is no small feat, and no surefire route to success, either. On paper, a new platform provides the opportunity to attract new players, and all the benefits that would entail.”
Source: N4G PC Maximum safety, minimum cost: How to launch your game on a new platform