I don't care too much about it, but I wonder whether the open sourcing of it and the Enterprise license for commercial use requirement are really orthogonal. N

I don't care too much about it, but I wonder whether the open sourcing of it and the Enterprise license for commercial use requirement are really orthogonal. Nothing is forcing Oracle to "routinely check log files for downloads of the VirtualBox Extension Pack from nonresidential IP addresses and contact unlicensed users to enforce compliance" (per https://en.wikipedia.org/wiki/VirtualBox#VirtualBox_Extension_Pack https://en.wikipedia.org/wiki/VirtualBox#VirtualBox_Extensio...). They could easily just say "this software is free for commercial and non-commercial use."