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International Computers Limited by Ciro Santilli 34 Updated +Created
They died so completely, Googling "ICL" now has higher hits such as Imperial College London.
Video 1.
Why the UK's IBM Failed by Asianometry (2022)
Source. Main lesson perhaps: don't put national money to fight already established markets. You have to fight for what is coming up next. E.g. that is part of the reason for TSMC's success.