Is there a way to disable android market?

Is there a way to disable android market ? Say for a device admin or anyone for that matter ? How does ATT do it ? Have they asked mobile m开发者_JAVA百科anufactures to modify the Android src accordingly ?

Edit : Can this be done on non-rooted device ?

You needn't modify the source.

The Market is just another app, but its typically stored in the /system/app directory which is read-only without root access. If you root the device, or if you're a manufacturer you simply need to remove the vending.apk from /system/app.