[bruce511]

I concur.

>> Why don't our overworked, underpaid open-source developers license their software

Of course they absolutely can license their software any way they like. That is their prerogative. Personally I write software for a living and it's all licensed with a commercial license.

By definition then I am not an Open Source Programmer. (I work on the odd Open Source project, but that's not the same thing.)

So any programmer can license things anyway they like. If their license is Open Source compatible then they're free to call themselves an Open Source programmer.

Your suggestion is equivalent to asking why an amateur golfer can receive prize money in a professional tournament. They very much can though, but then they're no longer an amateur.