[prpatel]

They don't. I've used Appcelerator for a number of projects that are now on the App store(s) and haven't ever worried about this. The source code is on Github under the Apache license as you mentioned. This is enough for me and my lawyers to not worry about it.

[erichocean]

How does that possibly prevent their sales people from contacting your customers and demanding $5000 or their app gets pulled?