Yes,they make their interest only.
I prefer open things,for example two years ago i bought a f***ed
sat decoder+pvr from Humax.
I think was open source(it include open source sw,is based on linux).
But for commercial reason(sic!) they encrypt with hw key all movie recorderd on decoder!
So you can record movie...for watch only on their decoders.
And support only nagra and conax encryption!
Compare it with a VU+ or better with a fanless pc+yavdr
You can get about 6 different ecnryption CI and recording movie for watching after on TV,on decoder,on your pc,whenever you want!
Sorry for off-topic but explain the situation good,imho