I love SirusXM. They are a truly unique offer in the modern music landscape of algorithm-driven music listening experiences. The human curation of shows and stations is why I listen. That said, they have a lot of problems: I have to complain yearly to keep my $8/mo rate, and they seem to be slowly moving toward wanting more algorithmic content with their Pandora merger.
I wish they'd focus more on growing their technology (e.g. a macOS app). They just did a big rewrite on all the platforms, seemingly toward this goal; I hope they keep going down that path.
If the government forces them to adopt more modern subscription practices, I think _more_ people would use their platform, not less.