[coldpie]

> you'd miss a lot of important calls

Like what? Who is both a legitimate caller and also trying to call me through one of these unverified legacy services? If their calls stopped going through to a huge chunk of their customers (this is one of the reasons receiving unvalidated calls should be opt in, not opt out), why wouldn't they switch to a verified service?

[inigyou]

Your bank is calling you from a verified network, unverified number, because it's one of their employee's phones but they want the caller ID to be from the main switchboard, and they didn't bother to do the extra work with their telecom to make this verify as a correct number.

[briffle]

and when they can't get lots of "we don't accept unverified calls" messages, they will fix the problem.