Viable? No. It's pretty much impossible for any new service to compete with the big juggernauts. Video streaming takes a ton of bandwidth so it's one of the most expensive kinds of services to run, and it's pretty much impossible to convince anyone to switch over from the established platforms. Streamers won't move because viewers aren't there, and viewers won't move because streamers aren't there.
Every now and then a new competitor pops up because some venture capitalist thought they'd be special enough to succeed where everyone else failed, and promptly dies. No one stands a chance of taking on Google or Amazon.
People will point out that PeerTube exists on the Fediverse, but all that can really be said about PeerTube is that it is a thing that exists. If it's viability you want, PeerTube isn't there and I don't think it ever will be.
sunscream