Originally Posted by
DAHenriques
It's never a good idea to establish a need for a specific control input for a given instant in time when dealing with aerodynamics.
True, however this need for aileron is directly related to dihedral. The vast majority of aircraft will have positive dihedral (meaning total dihedral effect, not wing dihedral angle), as negative dihedral would make the aircraft behave very weirdly. It would make the aircraft very unstable on the roll axis, I'm not even sure this could be certified.
However for other inputs, you are more than right. For example roll input during a stabilized turn.
Also, for aerobatics, the controls are often reversed when flying reverted...