– 6 of one- half dozen of the other!
Industrial Design is Slowly becoming out of reach for new-comers-- just look where the manufacturers are! So- get into a studio that can open a network to you, and cultivate those links.
Interior design must do a better job of defining itself to be considered a 'professional’s" career-- It is, but it’s often confused with interior DECORATING… which is really just a matter of taste applied to an interior.
Interiors are much more readily designed… everybody has one… many need a bit of help designing it. Can you show me your Industrial? (sorry, a bad way of defining the difference in market reach of the 2 professions.)
Keep in mind… a requirement to be licensed may change either career in the future… be aware of any political moves to impose licensing on the profession(s). Try practicing architecture without one.
-Regards!