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Approximately how many CP/M-86 copies or licenses did Digital Research sell across the product life of the operating system? Are there any data or estimates?

I know the success of MS-DOS didn't leave CP/M-86 much market share, but it would be interesting to have some figures.

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    A datapoint: In Denmark the Danish computer vendor Regnecentralen used first CP/M-80 and then on their public school computers CCP/M-86 (ending with Concurrent DOS). They had four virtual consoles similar to what Linux provide today. Very nice machines. I do not know the sales numbers.
    – Thorbjørn Ravn Andersen
    Commented Sep 25, 2022 at 17:57
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    I’m guessing there might be some ambiguity as to the product life of C/PM-86 given how it morphed through Concurrent DOS into DOS Plus, which begat DR DOS. Presumably the cut-off would be between those final two, i.e. up to the point that the CP/M interface was removed?
    – Tommy
    Commented Sep 25, 2022 at 18:11
  • It's a good point but I'm not sure such detailed data are available, so for the time being it may be better not to constrain the product life.
    – Paolo Amoroso
    Commented Sep 25, 2022 at 18:29
  • The DEC Rainbow came with a version of CPM that could run CPM-86 code and also CPM-80 code. The name was something like CPM-80/86.
    – Walter Mitty
    Commented Sep 26, 2022 at 10:43

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