You want to sue because you have to change a channel (spending no extra money mind you) on your system? Yes I'm sure that lawsuit will go real far. What damages will you ask for by being forced to log into your router and change the channel. Two totally separate issues, and you can not compare your example to stealing a service from a neighbor.
Now if you want to argue the interference side, I would agree with you that you should be able to force someone who has the wireless systems (pre-N I believe do this) that cause a neighbors system to become totally inoperable. That is unacceptable, however, since the FCC in it's infinite wisdom does not regulate those frequencies, there really isn't much that can be done.
In response to many others topics on wifi stealing and so forth.
How about the fact that sometimes people's wifi bandwiths will conflict with each other, forcing an individual to change the channel of their wireless network.
(As this had happen in my current home. My wireless networking was sluggish at times, but when I changed its channel, it became much faster. This of course doesn't bother me, as I had to simply change the wireless channel...)
But if you're gonne sue me for invading your wifi that is unproteced and broadcasting in my home... I'm gonna sue you for nearly forcing me to change the wireless channel of my wifi in my own home... in order for our wireless networks to co-exist