I'm not entirely sure that the blog is totally correct in this part. I've always been fascinated by censorship (especially when it comes to movies/entertainment) and have seen/read a bunch of stuff about vhs in the 80's. Here in the UK we had a term, 'video nasties' for a bunch of horror films that were banned (Evil Dead being a very prominent example). Anyway, the general concensus I've always been under after watching/reading all the documentaries about that stuff is that the reason why the porn industry used vhs and ultimately won the format war was because the prudish japanese execs at the sony would not alow 'smut' on their precious new format and if the industry could not license the use of that format then they had to use vhs. The porn industry didn't choose vhs over betamax, vhs was the only option available to it.