alt Hacker News> You can't effectively paywall it because not only is it open source, but there are many nearly equivalent competitors all of which are free.
You're forgetting that people will buy a product on brand identity alone. If the Firefox brand is solid enough, those forks won't matter.
I think the point is that if it was open source but free, it would require donations. And given the money that Mozilla spends every year, it would mean that the amount of donations they would need to receive would make them one of the biggest charities in America. Which sounds implausible.
I think the argument makes sense, to be honest.