[ctvo]

For any number of reasons that the author should be able to decide and not be forced into doing?

The original comment was that this would limit adoption due to licensing restrictions, and I'm not sure how this change helps.

[vorpalhex]

So it's very conceivable that if your app is producing money for you, you don't want to open source the magic as it were - but if you're making money, you shouldn't expect a free ride.

However, if you aren't making money, and are still using the work of others, then it's good to contribute back - even if that's just by open sourcing your work for others to learn from and study. It's not required, but neither is it required for this framework to have a free tier, much less a truly free one that helps protect the future of your app.