Somehow this thread touches three fundamentals of the camera industry. (Kindly take into account I am far from giving hard fact knowledge)
One is technological development. The second is users market fashions. The third of course, profit making.
Consider for example the recent speculation about a new Fujifilm folder. Many folks at the corresponding thread said they are ready to pay hard money for such a Medium Format. Why?
Because beyond fashion, trends, digital revolution etc, film is still good, and a FOLDER camera as a viable COMPACT MEDIUM FORMAT camera, remains a good idea, a convenient thing.
Like bicyclets, good things are going to stay, or come back again.
Following this thread, I would say it is rather doubitable weather the infinity lock is going to be back some decade ahead. But the small focusing wheel - its day will come for sure !
Cheers,
Ruben