IBM is so 'BIG BLUE' that they really compete with themselves.
It's kinda funny. Yesterday I went to a computer repair shop to buy some old RAM and I got in a conversation with the shop owner about Mac stuff (he had an old B&W G3 Power Mac sitting there) and he was talking about Apple not being 'IBM' compatible, and I had to think about it for a second before responding because I was thinking of 'PowerPC' and he was thinking of 'PC'!
Weird :-o