Bill Gates would no longer be in the top ten most rich people list.
that should be fine if it's a result of the owner's fault, under other circumstances, if he's a victim of a crime (theft, sabotage, etc), most people will probably think not having a lost-coin recovery mechanism is a flaw.
what's your coin recovery mechanism when someone breaks into your house and steals your stash of cash and valuables?
the 'stolen bitcoin' recovery mechanism is exactly the same.