If a network chooses to stop filesharing, either to avoid potential legal issues or personal opinion, then that's fine. It's their network and they can do what they want.
There will be more that do this I reckon. The days of allowing 80% of the connections to be filesharing bots and then bragging about having 100,000 users is coming to a close. People are what count on IRC. Bots (aside from channel/server protection) are completely insignificant.