I don't think it's the viability itself. The many options also play a role: back at the digg exodus reddit was the only alternative to a large extend or at leas

I don't think it's the viability itself. The many options also play a role: back at the digg exodus reddit was the only alternative to a large extend or at least the only alternative most people were aware of. But a new platform technology paradigm entirely might be better (decentralized).