I have full insurance to cover all my gear. But still it would be pita if I lost stuff. On my FB circles I see occasionally people posting about stolen gear. Wouldn't it be nice if those would go away?
Acutance has good point about 3rd party. But I'm not sure if they would dare to do that.
They'd have to figure out how to accomodate the used gear market though. Seller sells gear but did not "deregister" it first. Now buyer can't use it because it's registered by someone else. And if the seller wasn't the user of the gear (i.e. estate sale) and knows the account passwords then it gets more complicated.