[wizzwizz4]

Free software licenses permit this, too: you can build stuff on top of it that makes you money and brings real benefits to paying users. You just can't restrict their ability to do exactly what you did.

The Linux and *BSD communities wouldn't be where they are today without those contributions, no. But they would be somewhere else. Not as far down the road, but down a different road; who's to say that would've been worse?