[SapphireSun]

Lovely. https://www.verizonwireless.com/support/unique-identifier-he...

"Verizon Wireless will stop inserting the UIDH after a customer opts out of the Relevant Mobile Advertising program or activates a line that is ineligible for the advertising program. GOVERNMENT AND ENTERPRISE LINES ARE EXAMPLES OF INELIGIBLE LINES. The UIDH will still appear for a short period of time after a customer opts out of the Relevant Mobile."

Emphasis mine. This sort of clause is indicative that anyone with bargaining power would not put up with this. Business users are probably even more valuable to have data on, but the individuals just deal.