These cellular contracts are negotiated under the Western States Contracting Alliance (WSCA), its $37.99 on both Verizon and AT&T for "Unlimited" data. In a prior life I had more overview on these plans, and only Verizon directly throttled these plans, AT&T would let you use hundreds of gigs with no issue.

Also, these plans are bespoke and rarely worked with, its likely their Verizon rep didn't bother to look into any of the handful of custom plans that you get as a WSCA account. Another benefit is a flat 25% discount or thereabouts IIRC, any public agency or charity in most states can get these plans FYI.