This is something google specifically does. And it's not something you can really do if you loose your phone (i.e you need two-factor authentication to get there to disable two-factor authentication). Plus is not something that is centralized (if you have X accounts you have to go to all X accounts and disable them), and then you need to reconfigure all X accounts.

Honestly that's a lot of work. I've been using Google Authenticator for 2 years now with 7 accounts. Everytime I change phones (twice now) it's been a nightmare. Also since I travel, half the time they don't work.

I am going to build Google Auth support into Authy and it will be 10 times better that the Google Authenticator App....how I wish Google would do it, but they have abandoned Google Authenticator long time ago (they didn't even bother to support retina display's).