As long as there are people willing to buy stolen bikes, there are people willing to supply them. While we can all do things to help protect us as individual riders, and our bikes, it doesn’t really go to the source of the problem. Many local jurisdictions have come up with some great and creative programs to try and stem the supply. But as long as bike theft is a relatively safe activity (as far as illegal, slimy activities go) it will continue to run rampant.
This is actually part of what was driving my recent post about bicycle licensing. Sure, the original article was written somewhat tongue-in-cheek (something that the folks over on reddit seemed to have missed.) It is easy to argue for bike licensing as an anti-theft activity, because, well, bike licensing ain’t ever gonna happen™. But it drives to a real, different way of thinking about bike theft.