Zd,
I think most data suggests that SQ is the least of the contributors to the problems killing record companies. Consumers overall don't give a sh*t. They want cheap, fast, convenient. Low quality downloads and streams are the fastest growing segments of the business.
BTW, the blu ray argument cuts this way, too. It's a dying segment that Sony (it's chief proponent) expects to shrink by almost half over the next five years.
Digital distribution (as suggested by the OP) has made record companies (and video companies) less important. And less profitable. I'm pretty sure than anyone in either of those businesses would agree with that sentiment.
I think there's a profitable niche business for high quality recordings (or high quality anything, for that matter), but the giant, hugely profitable record company is a thing of the past because people don't need it anymore. And, in total dollars, they won't pay for it, either. SQ notwithstanding.