Historically it's been very difficult to make social media sites profitable. Did Digg ever make a profit? To my knowledge Reddit is still in the red.
There has also been a large rhythmic trend of migrations especially in social. So it's very possible people are ready to move on to Voat, the question is will Voat find a way to make a profit?
They've mentioned exploring some interesting profit models, such as paid subscriptions and content sharing. I'd really like to see them make a big push with a reddit gold similar component but in a better way.
Essentially patronage for social media or content curation.