@masterofthetiger@theres.life @Algot No I cant, not exactly. I can NOT take a permissive license piece of software, and simply sell it to someone under a proprietary license. You can sell it (just as you can GPL) But it will remain open-source.
What you mean to say is that under a permissive license you can **add** your own code to it, keep the code you add as proprietary, and sell the software.
This distinction is important, the old code is still open-source, you need to tell people where to get it,a nd you need to continue to provide that code as open-source. The only thing you are allowed to do is close-source your **new** additional code and then sell compiled versions of the software if you wish.
The difference is vital!