> And any given company should have every right to sell/filter as necessary those users.

You've been misled. Filtering isn't necessary. If a user is contributing to congestion on an oversubscribed line, you can drop some of their packets to reduce their usage to a fair share, without having to single out any specific types of traffic. ISPs don't have to be non-neutral in order to keep their service running. This is true at any scale, which is why having an exception for smaller ISPs is completely unjustified and is nothing but a foot in the door for those who would dismantle net neutrality entirely. Raising the pointless threshold is just a step toward that anti-consumer goal.