A last minute suggestion to Find My Mac

Question

The newly introduced (yet to come, but we suppose it comes out along with iOS5 on OCT 4) Find My Mac power is a strong defense against lost Macs. But here comes one trivial question:
Such a measure, to be effective, should be working "backwards", not "forwards", should't it?
By saying backwards, I mean, the mechanism should be able to protect it self, override current settings and let you Find YOUR Mac after you realized your Mac has been stolen. To make it a really effective method, Find My Mac functionality should be activated by default, not by Prompting!
Here comes a hilarious picture. Even if you got luck, enabling "Find My Mac" beforehand it's stolen, the thief can readily reinstall OS and "don't allow" Find My Mac to even start to function. What's the point of "Find My Mac" then? Or is Apple assuming all thieves are as stupid thus forgetting to refreshing your whole HDD?
This is totally not professional. As I know, all the "recovery" softwares for mac, they work in the same "forwards" way. Assuming you managed to Enable them beforehand, and hope for the luck that those thieves are stupid enough not to erase your HDD and yet smart enough to know your password to log in in the first place.
A real world Effective "Find My Mac" should be working backwards, Apple technicians should think about realistic situations "rather than fatasy":
1, Activates automatically, or can be activated remotely under authorization (like, from Apple or Police Department) AFTER you found your computer is stolen or deactivated/restored by the thief.
2, Binds Serial Number. S/N is the only reliable identification for a Mac, since usually thieves will not replace your mother board. It should work in the way that once you knows your S/N and you have registered it under your Apple ID (the whole meaning of ever registered it, isn't it?), you should be able to know where the Mac with the same S/N are.
3, It's totally OK that is uses Internet to locate, given our macs don't have GPS or SIM Card. You see I won't raise far-fetched expectations.
That is one of the only logical way that Find My Mac could ever be useful in a case of theft. And that's what all the customers really wanted, being victims for stolen Macs for years. I know and understand Apple totally doesn't have to do any of these. But isn't it nice we can use Apple Community, Serial Number and its Registration database to protect ourselves. Only Apple can do this. You had direct access to all your devices. I don't see why you can't do this while you can boldly "report, or steal" people's whereabouts for business benifitials in your ios.
Is it beacause after weighing in and out, you find it's not worth it? Is it not worth it to protect your own betrusted consumers against their largest threat to their products: theft? (Note, not all theft are indebted to the owner himself. Break in, Robbery).
If you do love your consumers, it really takes nothing to build a defence within the Apple system. I see "Find My Mac" is a huge step forward. But i hope it can really work to solve real life problems.
Just my last minute suggestions. I am waiting to find my lost Mac one day. I will wait to that day. Because it's not technically impossible. It's just some guy, they don't do it.

Answer 1

The new "possessor" does not need to erase or reinstall. All he needs to do is boot to Recovery HD (single user mode for OS 10.6.8 or earlier), and reset the password–> http://osxdaily.com/2011/08/24/reset-mac-os-x-10-7-lion-password/
For "almost" thief-proof option, you must use your iPad or iPhone to activate firmware password as soon as possible after the Mac goes missing or have already activated a firmware password login. For Macs built 2011 or later, that can only be bypassed at an authorized Apple service shop that SHOULD request ID from the possessor.
A firmware password prompt will appear at the next restart, and no optional boot is available. That means no option to reset admin password, or erase, or boot to single user mode, or reset NVRAM / PRAM, until the firmware is reset using a special digital key only available to the shop. Even a new storage mechanism (new HDD, etc.) cannot turn off the firmware prompt. The digital key is canceled and a new key provided periodically, thus twarting any useful distribution outside of official channels.
Apple does not take a pro-active stance on using firmware password, because for the owners with bad memories, it can become a huge headache and will cause ill will.