Michael, over at eclecticism, reminded me that the quote I was grasping for was attributed to Thomas J Watson, one time chairman of IBM. The quote is as follows: "I think there is a world market for maybe five computers." It turns out he may never have said that and the rumours that he did may be little more than a myth. According to the entry in Wikipedia –
Although Watson is well known for his alleged 1943 statement: "I think there is a world
market for maybe five computers," there is no evidence he ever made it. The author Kevin Maney tried to find the origin of the
quote, but has been unable to locate any speeches or documents of Watson’s that contain this, nor are the words present in any
contemporary articles about IBM. The earliest known citation is from 1986 on Usenet in
the signature of a poster from Convex Computer Corporation as "I think there is a world market for about five computers"
–Remark attributed to Thomas J. Watson (Chairman of the Board of International Business Machines), 1943.