Every single movement a dressage horse performs can be done by any old nag prancing around in a field, showing off, they're just bred and trained to do it under saddle. It originally started with war horses, if you watch the Lipizzaners leap through the air and kick out their hind legs, that was to win wars. Horse welfare is front and foremost these days, there was a big fuss a few years ago over rollkur, people were riding around with their horse's head between it's knees, this headcarriage is incorrect and possibly damaging. Trust me, if your horse doesn't want to do something, there's precious little you can do about it!!! Dressage is beautiful, especially to music, watch and enjoy!
Oh yeah, the horses are worth around £500,000 each. They are gods!!