It’s a matter of psak din. And I don’t know how those three Rabbobim would have paskened. Do you have a mekor from ANY of them where they wrote a shaila and teshuva on this issue?
No, it is NOT pashut that it is assur. IF you would otherwise purchase the program, there is an issur of taking away business from the producer. (Though I believe this issur is only applicable towards a producer who is a Yid.) There is no other issur. And I’ve heard this psak from a Rov.
I understand Rav Belsky shlita paskens differently. And I respect that. And I respect your, and anyone else, following that psak. But that is not the only psak on this issue. Nor is it such a simple answer as you portray it.