Sorry, but that's just bullshit. If you want to own the code, write it. Don't link to a GPL library and say "that's mine now."
And far, far more developers make in-house software, for a slary, than thw number of developers that make software to sell. They are perfectly free to use GPL software, even with their own modifications if they don't mind maintaining it, as long as they don't distribute it.
If you want to make a profit on software, don't use GPL parts. That's your choice. But don't pretend the GPL isn't protecting against hijacking by arguing that is preventing you from hijacking it.