At this point, there's nothing anybody can do to compete with Steam. GOG exists, and despite their awesome raison d'etre, their launcher UI is crap. Epic is probably the closest thing to a competitor, and even its nonstop free game offerings (mostly unheard of indies now) isn't enough to get me to switch. Also, it's UI is crap and the launcher itself is really unstable (constantly refreshes your library and sends you back to the top). The time to launch a competitor was in 2005, when Steam wasn't that good yet.