Though again, that's households without landline service. The households still have landline access, in the sense that they're wired to the network.

The actual penetration is closer to 20% now in many regions. Staggeringly low. And again, I think PSDN as a whole -- that's mobile dialed and VOIP SIP calls, as well as POTS -- may not be long for this world. The spam / robocall issue is the tip of the iceberg. Personal and business fraud is another major element.