I completely agree with you - mainly because you're making the same point as I did: OP didn't want other people making licensing money with his software, so he

I completely agree with you - mainly because you're making the same point as I did: OP didn't want other people making licensing money with his software, so he copylefted it. GP didn't like this - at which point I was making the point that apparently he'd like to get in on licensing money (of derivative works), without giving OP a fee. Because, as you described, that's pretty much the only case where OP's model wouldn't work. What you described IMO fits into what I was saying - you can make money on GPLed software just fine, if it's based around services or consulting, even if it's just for internally used services (because internal customers are customers too - you could even be your own customer).