Except that you're going to pay a lot more than you would for those off the shelf "normal" servers in a rack. Probably enough that you can afford doubly-redundant normal servers for the cost of a non-redundant IBM mainframe, with quite a bit of cash left over.
Yes but when that system falls over, your boss is yelling at you, and you're on the hook. With IBM, you can all yell at IBM. And that's why big enterprise companies buy IBM.
