For most companies I guess you would just ignore it as any alternative would be not worth it by a far shot.

For some special cases using the private use area(s) + a db storing images of the glyph + auto generating a font including glyph generated from the images could be one solution. Another would be to force people to change their names.

For other use cases (e.g. historic) storing a Unicode "approximation" of the name and a picture for the name (full or parts of it) can be a viable alternative, allowing you to generally just have Unicode but still store the information which was discarded when approximating the name in Unicode.

Also trying to extend Unicode can always be a option.