Comment 15,000 is a large class waiting to sue (Score 4, Insightful) 185
It's a clever idea (like Comcast wanting Netflix to pay them for what Comcast's own customers pay them already).
Right now you have 15,000 paying customers. They are almost "captive" in the sense that they get Internet service without having to put any effort into it, so they will continue to be customers so long as you treat them fairly.
Your customers pay you to give them access to the whole Internet. If you remove parts of the net until someone else double-pays you for that same service, you'll find yourself on the wrong side of a Judge certifying a class-action suit against you for lots of fun things like breach of contract, tortious interference, and possibly material misrepresentation (not fraud - fraud isn't covered by E&I insurance).
Your safe bet if you wanted to do something this stupid is to give your 15,000 customers FREE Internet with the caveat that some sites may not be reachable unless the other side pays for it. This would be legal, but it won't be financially profitable.
So you can either retain a sustainable model where you're not getting sued, not extorting third parties, and making money, OR you can extort third parties and likely get sued OR you can move to a financially non-sustainable model.
As an IT director I guess your job is to figure out how to implement what the Directors wants. As anyone with half a brain I would recommend they make the selection from the choices above before spending a minute researching firewalls and private-dickhead-networks.
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