> No re-registration or change of any kind of the existing domains is necessary.
So who gets to own www.foobar, the owner of www.foobar.com, www.foobar.net, or www.foobar.org?
So who gets to own www.foobar, the owner of www.foobar.com, www.foobar.net, or www.foobar.org?
foobar.com -> foobarcom
foobar.net -> foobarnet
foobar.org -> foobarorg
foobar goes to whoever registers it first