I guess nobody will help with the "arrogance" behind
I also really don't see any arrogance, just a clear explanation?
Finding older licenses can actually be very useful, most of the time only minor things are being updated.
For the same reason I worked with PADS (for PCB design) and CoCreate 8 (3D CAD) at a certain company.
There was just no need to upgrade it and waste money for new licenses.
Best place would be either Ebay, sometimes Amazon but in general you just have to be lucky.
E-mailing companies directly for licenses won't really work in my experience.
They will always try to let you buy a new licenses, sometimes with a discount.