I think, besides what @joanaltres has said in the comment below about SMTs being the consumer friendly versions on the Steem blockchain, that we have basically two options where to take the Steemit app.
One would be to incentivize other uses and values than the monetary one (I have written about this 2 weeks ago here).
The other option is, to focus on the 5% content creators, who will also comment and interact with other creators and therefore also being consumers.