Ask HN: Why do sites not direct non-mobile users from mobile site versions?

Sites are smart enough to detect mobile users and redirect to the mobile version, but never seem smart enough to do the inverse. It's annoying and difficult to read if not on a mobile device. On one hand I think it's laziness of submitters, but it's also developer laziness.

Usually you can escape the mobile version prison by removing the "m." prefix from the host, but not always.