Oh, gee, I'm scared. What most people don't know is that they actually have a bit of power in claims against cellphone providers.
This law is most likely solely created for the reason of stopping people from buying contract phones at a deal that makes the initial purchase + cancellation fee worthwhile. I travel overseas a lot, and it helps to be able to use your phone with multiple providers when traveling. If I unlock my phone, and still remain with the original phone service provider, and they go after me, good luck to them. Something similar happened to us when we had Verizon a while ago. Didn't work out well for them.
Consumer protection...something consumers know nothing about these days.
Also, with all the new free wifi phone apps, and the vast majority of free wifi available now a days, one more move from them and i'll just completely drop them.