Just to be clear: the original face appeared to have multiple variations required within a single system; you were expected to know when to use the serif (!) face, and when you needed to use the wide sans (because the normal sans face has lots of fine detail that doesn't work in adverse environments).

It wasn't just that they had "display type" and "copy"; users of the Spiekermann face might have needed to know a fair bit of typography to make things look good in it. It was intrinsically complicated, beyond the complexity of Nokia's needs.