It is the main frontend for a lot of people ;) haha

But in all honesty we do need the other frontends around to help with the decentralization aspect. So we need steemit to survive.

Also if steemit doesn't get some good traffic then they won't get ad money and then they'll sell.
We'll worry about our own userbase coming soon... we haven't started our marketing push as of yet. We have a few more tricks up our sleeves before that.