Yeah, OK, you have to be a Neil Young fan to get this headline, but news that Ohio University has banned P2P from its network is significant.
There are many companies that now offer products to enable such blocking and they will become mainstream.
Bandwidth hijacking from companies such as Joost is becoming commonplace, so it's not surprising that networks are fighting back (as should individuals who are unknowingly subsidising the growth of networks like Joost).
P2P, as I've often pointed out, has its place, but it is a technology where the pragmatic economics don't work - apart from for the hijackers... And it's not just the bandwidth use - it's what the bandwidth is used for. Apparently Ohio is the worst campus in the US for music piracy (and that's saying something), so go figure...
The effects on net neutrality are yet to manifest themselves