I think it's more of a network effect. That phone number has been given out for years, and all their friends and family have it. They'd have to get a second cel

I think it's more of a network effect. That phone number has been given out for years, and all their friends and family have it. They'd have to get a second cell phone or use a service like Google Voice to make use of it beyond a landline, so it's logistically easier to just keep it as a landline number.