I can't tell you why companies do things like this but it is not unusual. Minolta made the Leica CL, Yaschica made the Contax, Cosina made cameras...
I would also go with a Beseler 23C. There are plenty of used ones around and it is easy to get parts and accessories for it. I have seen them...
If I remember correctly the Kern Macro Switar made for Alpa cameras was considered to be one of the best.
I have had my Rolleiflex serviced by Mark Hansen and he did a very good job.
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