[K0HAX]

The telephone companies make money based on minutes of usage. There is a very large financial incentive for the really big telcos to allow spam calls.

Spam callers are likely the most lucrative customer of the telephone network for the telephone companies.

[ternaryoperator]

> The telephone companies make money based on minutes of usage.

I don't see how that could be correct. Once you pay your monthly fee, the fewer minutes you tie up the company's resources the better for them. That's true too for pay-ahead plans.

[wasmitnetzen]

Your provider get paid by the caller's provider for taking the call, and the marginal costs of a phone call are close to zero.