For me personally, DRM (or the lack thereof) is a core principle and I hold it above all else. Of course, that is just one opinion.DRM seems to be just a "minor inconvenience" for most people so the decision usually favors familiarity, features and ease of use of the platform.
I'm kind of angry at GOG for putting so much effort into making Galaxy the one launcher to rule them all while basic functionality (like review editing) is completely missing.