At least for games, there might actually be a way to approximate this - PS3 could not be cracked to run pirates games for quite a while. And had a comparable rival console - comparing sales&#x2F;piracy amount could give us a clue about the numbers, though it would be limited to this particular media type. Anecdotally the friends who had PS3s tended to actually buy those games, ending up 2-4, while the ones with chipped&#x2F;cracked consoles had an order of magnitude more...