Certainly, other entities do not share the full ethos of software freedom as

institutionalized by COGEOs, and those entities pursue GPL violations

differently.  Oracle, a company that produces the GPL'd MySQL database, upon

discovering GPL violations typically negotiates a proprietary software

license separately for a fee.  While this practice is not one a COGEO would

behavior.  To put a finer point on this practice already discussed

in~\S~\ref{Proprietary Relicensing}, copyleft advocates usually find copyleft

enforcement efforts focused on extract alternative proprietary licenses

distasteful at best, and a corrupt manipulation of copyleft at worst.  Much

to the advocates' chagrin, such for-profit enforcement efforts seem to

increase rather than decrease.