So true. Also, some horses need 1-2 little corrections a week and some need 20 every time they are touched to genuinely respect boundaries.
My first mare was a giant hulk of a mare with an big alpha personality and I was probably 85 lbs soaking wet when I got her as a naive pre-teen. I had no idea what a boundary was and don’t think I even knew to establish a boundary while she was alive. She never once did anything unkind much less disrespectful in our decade together.
My current mare requires probably 10-15 corrections every single time she leaves the paddock. It’s that tiny reminder to wait, let me choose how your foot gets placed down, where your head goes when I saddle, I said ground tie and that includes the one foot you just moved a few inches, etc. Without really precise boundaries she’s “fine” until she tries to tell someone to stuff it and spins in the field or tries to throw a foot during blanketing. I don’t love it but it is who she is and she would be an absolute menace and likely dangerous with the average experience horse person who doesn’t want to be on 24/7. I know that’s not Black Beauty mindset because she’s gotten the best of many experienced barn workers and trainers over the years lulled into security because she’s golden (ground tie, leads like a lamb, self loads, lovely for appointments) until she’s not if you don’t have a 0 tolerance policy for the daily questioning of who is in charge.