You're quite correct, it's a known fact that Apple hardware is not nearly as diverse. This is a valid point in the carping about Windows stability in many case

You're quite correct, it's a known fact that Apple hardware is not nearly as diverse. This is a valid point in the carping about Windows stability in many cases - Windows has to deal with orders of magnitude more hardware than Apple does, and the difference is one of the big reasons for OS X's stability (along with the Unix underpinnings). As for the hardware vendors, it may well be their "fault" but the average user won't care - as far as they're concerned it either works or it doesn't, and at the end of the day, they're right.