Actually no Jules they cannot terminate your contract at will
Yes, i have read it and I have read it with very experienced and knowledgeable eyes. I suppose it all depends on what you mean by at will, but I assure you there is enough wiggle room in the language Verizon has incorporated into their T&C and CAs that they can terminate your contract for this kind of activity. Here's an example.
WHAT ARE VERIZON WIRELESS' RIGHTS TO LIMIT OR END SERVICE OR END THIS AGREEMENT?
We can, without notice, limit, suspend or end your Service or any agreement with you
for any good cause, including,
but not limited to: (1) if you: (a) breach this agreement; (b)
resell your Service; (c) use your Service for any illegal purpose, including use that violates trade and economic sanctions and prohibitions promulgated by any US governmental agency; (d) install, deploy or use any regeneration equipment or similar mechanism (for example, a repeater) to originate, amplify, enhance, retransmit or regenerate an RF signal without our permission; (e) steal from or lie to us; or, if you're a Postpay customer; (f) do not pay your bill on time; (g) incur charges larger than a required deposit or billing limit, or materially in excess of your monthly access charges (even if we haven't yet billed the charges); (h) provide credit information we can't verify; or (i) are unable to pay us or go bankrupt; or (2) if you, any user of your device or any line of service on your account, or any account manager on your account: (a) threaten, harass, or use vulgar and/or inappropriate language toward our representatives; (b) interfere with our operations; (c) "spam," or engage in other abusive messaging or calling; (d) modify your device from its manufacturer's specifications; or (e) use your Service in a way that negatively affects our network or other customers. We can also temporarily limit your Service for any operational or governmental reason.
Good cause means anything Verizon can convince a judge it means. If you think a judge would not find this behavior good cause to terminate your contract, you have never been before a judge before.
Peeps, don't be stupid here. You not only risk getting yourselfs kicked off of Verizon, you risk ruining it for everyone else b/c you are going to trip fraud flags with this much unusual activity on your account.
It's one thing to get a UDP line or 2 to give to family members or even a couple to sell, but to churn them and think you will be doing this all under the radar is just naive. I am sure Verizon has some mechanism in place to detect unusual activity on accounts.