That's pretty debatable. The British government never explicitly supported development of Arm technology. Acorn had a commercial arrangement with the BBC and schools bought BBC micros (including Archimedes but also others such as the PCs) but its a stretch to say that Arm was subsidized by the public.
Inmos which was a government supported CPU designer at about that time is long gone.
If anything the lesson from Arm is that it succeeded because of acute awareness of the commercial needs of its customers - e.g. the addition of Thumb to the ISA - and the need to build an international client base.
Inmos and the transputer morphed into xmos[1] - same basic ideas (the David May[2] connection) but refined, and the programmable gpio is pretty nice - seriously there aren’t many chips where you write your SDRAM controller in software...
They’re doing pretty well in audio, iirc. I tend to use FPGAs for most of the things I’d use an xmos for, but I’m probably not their market. If you want a microcontroller with guaranteed low latency input/output, they’re pretty neat, and the links between chips can be very useful.
I don't know but I have a portable dac from iFi that uses a XMOS processor for some operations. They warn against flashing firmware meant for other XMOS-based dacs, so it must have a certain market share in the segment.
Inmos which was a government supported CPU designer at about that time is long gone.
If anything the lesson from Arm is that it succeeded because of acute awareness of the commercial needs of its customers - e.g. the addition of Thumb to the ISA - and the need to build an international client base.