like everything else in 2018, live-streaming is overhyped and competes with everything else - work, sleep, netflix, social etc.
I also don't think the focus on gaming / live streaming is enough of a differntiator - youtube does livestreams just fine, Facebook is catching up and I think youtube/alphabet have better economies of scale (with their own cloud infra, additional ad revenue etc) and more tightly integrated ecosystem (preinstalled youtube on Android etc.