That's a very good question! I think so, yes. The Steem blockchain is completely open - and that's why we are seeing so many great apps coming up. It's probably not a stretch of the imagination to see it used for different applications. But I'm not an expert on the matter. Perhaps someone else can comment on it.
Honestly, I haven't looked at two years ahead. I have invested in Steem Power because I want to see the community succeed.