I completely agree that you must be compensated. I don't think anyone is telling you to share this for free, in fact, a lot of people are stating how they would be happy to pay for it.

It makes sense that a collection of apps, extensions, etc would become a full-time job that demanded full-time compensation. I think the disconnect people are having would be, how could a single app demand that?

Either way, it's your prerogative to do as you'd like with your app. I wish you the best of luck as it's a really neat sounding app.