Ask your ISP. Show them this matters to you, enough to cancel your contract. I asked mine (PAXIO in the Bay Area) and they said they have no plans to sell any customer data.
Is that the logical endpoint of capitalism? Becoming so successful that competition is obliterated? There are no real checks and balances working against monopoly/cartels these days.
WhatsApp said that too. When they change their minds, it will be too late.