It's not as simple as you make it out to be. I believe DStv pays royalties for supplying a PVR service. They also have to put content protection on the AV outputs (macrovision), so you are not supposed to be able to record to HTPC's or HDD recorders (this is obviously not very secure). Bottom line is, MC are not making these rules. It is made by the people supplying the content.
Couple of points ...
If DStv were paying royalties, then why is it R65 no matter what package you are on? If you are on Compact or even Easyview, who is getting the whole R65?
And they do not use Macrovision. They use CGMS-A, which should allow you to record ONCE onto a modern HDD recorder, and then transfer that recording from the HDD on to a CGMS-A compatible disc.