Before continuing Your accusations, please provide GPL license text that is violated when sending binaries over private channels. You can assume that user is asking and paying developer to make better code for him from open source code. Can You make citation from GPL license that is broken with this?
Oh yeah? He's making better open source code, so he can then open source it? Using a loophole doesn't make it right. You're not supposed to be able to profit off other persons open work without their permission, that's the way it works. Just because you do it in private doesn't mean you aren't violating it. It's like doing something illegal profit still makes it illegal even if you more then likely wont get caught.
Your freewill understanding of GPL license doesn't count at all. If You can not provide citation of GPL license that is broken with before mentioned case than You should stop Your false accusations.
DJM was spouting BS and I followed along with it without reading through the entire license agreement (my bad for believing DJM knew what he was talking about).
Don't project your own behavior on others

Can you tell me how long would stay a fee in an open-source code ? (hence the reason why it needs to be closed source... and most likely crypted... hence might violate licence agreements... I guess I will probably have to explain you this over the next 2 or 3 months...

)
ps: If I spout BS this is as an amateur, you clearly have the world record... (and don't worry, your record is safe, I have no intention to become pro and compete with you... not that there is any chance to beat you...)
edit: the article is interesting though...