You seem to have the attitude that every mechanical change is some nefarious plot by evil manufacturers to FORCE you to spend you hard earned money on the latest equipment.

To answer your above question, full suspension will appear on touring and hybrid bikes when they are ridden under conditions that make it beneficial. A lot of off-road touring is indeed done on full suspension bikes.

Cyclocross bikes are defined by the UCI so they don't have suspension because the rules don't permit it and the extra weight would be too much of a disadvantage for the type of riding they are used for.