if all investors are patient, they're unlikely to fall from such situations and they'll even thank themselves for learning how to be patient.
Being patience and investing are highly related but basics of investment principles are not limited up to that level. What would happen if you invest with a saturated business or an asset with no future, there being patience got nothing to do with your profits. I mean to say being patience will help only if you are good at choosing right assets. You need to be skilled for where to be patience and where to switch your investments often.