This law sound like it was written by data brokers. It does nothing at best and legitimizes corrupt practices at worst.
WTF is "consent" doing here? Why would ISP ever need to sell someone's data in order to operate? Do they also plan to explicitly prohibit ISPs from torturing customers and selling their organs? From selling illegal drugs to minors? Dear state of Maine, I too would like to waive all my legal liabilities by making my victims sign a bunch of paperwork!