If these businesses are so dedicated accommodating gender-confused individuals, and consider majority preferences unimportant, then I suggest they provide a third convenience: His/Hers/Its. Problem solved.
School locker rooms are another front in this battle. School administrator who have transgender athletes have to ensure accommodations at home and when the team travels. Accommodations as present meaning a Family Restroom, but the LGBT mafia is chiseling away at that as well.
I don’t see how this ends well if it ends where they want it to end. If there’s a teenage girl athlete that thinks they are a boy, how does dressing/showering in the boys locker room help? Seems to me like they are asking for something they will regret getting.