You're right.
I didn't mean to say “move to an area where people have expended effort to make sure billboards are not permitted”.
I meant to say “expend effort to make sure billboards are not permitted, or move to an area where people have expended effort to make sure billboards are not permitted”.
And no, "just" move to another place is not a proper argument:
https://en.wikipedia.org/wiki/Ergo_decedo