What business model? Bitcoin does not produce anything. It is free, so it does not have earnings. It is a currency, or a open source bookkeeping platform. Steem can be a currency, too, but I suspect the high built-in inflation rate will hobble it as such.

That said, I think Steem works just fine for content curation. The model is quite ingenious, and could eat reddit's and hopefully even facebook's lunch. Just don't expect them to convert into hard cash forever.