'Twas ever thus!
Cosina made so much camera equipment, there were always far more names than manufacturers.
As for the future, I worry about Nikon. They barely make film cameras, but the sensors in their digital models are all made by Sony, the owners of what was Konica Minolta. Sony is a massive company, yet it has a lot of unprofitable sectors. A decision at the top could ruin Nikon.
It's a precarious business. None of those big names have a right to be around in five years.
I think I might retrain as a camera repairman.