AFAIK, no telco has proposed that. They have proposed making you pay on the back-end though. Netflix will have to pay your ISP to allow Netflix's packets through to you regardless of your plan. But this means Netflix will have to raise prices.
I tried to warn everyone. Looks like the 1st move by the telco’s are starting to take shape.
Step 2 -
fiddling with web traffic to force content providers to pay up, and/or force people to a different tier to get access to certain sites. It will be like the multi-tier television packages. Oh, you want to access freerepublic.com, FR didn’t pay their bill, so they are not provided on your internet package. Or, you have to have the most expensive internet package to get freerepublic.com