very simple, because as a company we'd like for manufacturers (think Samsung or LG) to come to us for licensing if they want to release a device using the framework.
That business plan allows us to avoid dicking around with developers like others do (we're on github, we don't try to obfuscate anything in order to sell "support") while still being able to make real money.
opinions on this position for an open source editor are welcome! we're still young :)