How are you going to monetize it? Your site has no mention of pricing.
Implementing billing and setting pricing is next on my TODO list!
Whereas your competitor just needs to build a hosted version, use the core you provide for free, thereby having a fraction of the expense and the ability to undercut you on price.
You have to realize going in that once you try to monetize your open source, some of your users become your competitors. They’ll tell you how great you are, while cashing checks off your hard work.