That article seems to be about the rise of Naxos. Interesting, but not what you intended I think? 

I can't see an obvious link to the article you described but I would like to read it, so if you can find it again...

Most if not all changes in this area of the law (and for that matter in PRS policy) are determined by the interests of high earners in the music industry rather than of most of the people who "keep music live". Many of my own most memorable musical experiences, both as listener and as participant, have been in the context of improvised-music events at informal venues like pubs. This kind of music already exists on the fringes, principally (I believe) because it's mostly made by and for people without the necessary connections, clout and cash, and measures like this always strike me as mean-spirited in the extreme because the musicians and audiences they hit most are those who are doing it for love rather than money, fame, "lifestyle enhancement" etc., and I imagine this also applies to the musical areas mentioned in the article. Sounds like the MU is being mealy-mouthed about this too.