I can speak for the cross platform open source project I work on; we don't pay the license fee. That means regularly bumping into new users that need help with opening the mac application, so we've written a "How to" guide as a workaround . It's an annoyance we'll live with, probably until we hit v1.0 and then i'll probably take it upon me to pay that fee.

Sad reality is that if you'not making profit (which Apple takes cut of), you're not important for Apple.