Tbh that’s the 80s and why these companies all exist today, Japanese economy was kinda peerless at the time.

You’re also forgetting the likes of Toshiba, Toyota & Fujitsu, who are also still very dominant in their respective areas.

Fujitsu is the one least attached to the consumer market, but what people don’t realise is a surprisingly large number of government supercomputer systems across the world run on Fujitsu systems. They don’t really have any competitors in that space any more.