This will probably just turn into a line in the terms and agreements that everyone just clicks "yes" because they have to in order to use anything.
Copied this from another comment of [his] on this post, but it answers part of your question. From the FCC fact sheet[0] on the decision:
> The Order prohibits “take-it-or-leave-it” offers, meaning that an ISP can’t refuse to serve customers who don’t consent to the use and sharing of their information for commercial purposes.
So at least they can't cut you off entirely if you don't consent/opt-in.
[0] http://transition.fcc.gov/Daily_Releases/Daily_Business/2016....