Two different shapes of business
Studio software and coach software solve different problems. Most of the confusion comes from treating them as the same category.
Studio software is built for a venue. A yoga studio with twenty teachers and three hundred members, a gym with a class timetable and a front desk, a swim school running ten lanes on a Saturday morning. The job is to manage a roster of staff, a calendar of public classes, a membership base, a point of sale, and a waitlist. It assumes there is more than one teacher, more than one room, and someone whose job is to run the operation.
Coach software is built for a person. A solo coach, a private tutor, an independent instructor working one to one with the same small group of clients across months and years. The job is to remember the client, hold the thread of their work, send the invoice without forgetting, and keep the week feeling calm rather than scrambled. There is no front desk and no roster of staff because the coach is the staff.
A coach who buys studio software because it has more features tends to spend the first month configuring rooms and resources they do not have and the second month wondering why every screen asks them which location the lesson is at. A studio owner who buys coach software tends to find it lovely for the first few clients and then runs into the missing waitlist and the missing staff roles around month three.