I used to be a Sprint Wireless customer. They used to, and probably still do blacklist phones, based on ESN of the phone. The ideas was that stolen phones or phones that were not off contract could not be easily sold. The general concept is sound. And I want something like that for my expensive electronics as well.
My fully loaded Macbook Pro cost a little more than $3K. If it gets stolen, I would like to be able to get it back. I understand that police may only recover it from an idiot who bought it from a thief. That does not make the original idea invalid. The buying idiot still has to return it to me.
There still are questions about how the stolen MACs are reported, searched for etc. But I can see how a central database of stolen equipment could be used to look for it. Perhaps coffee shops and other public spots could help identify stolen equipment as well.
Those of you looking for a perfect solution that handles every case flawlessly will not like anything being proposed here. You should move on. The rest of us will be happy with something that does help with this menace.