What you say is really thought provoking. Like a muse coming rolling over the land like in Elizabeth Gilberts BIG MAGIC. Get me dreaming! 
I imagine if you had a couple really nice horses to ride - mostly safe and low key . And you combined trail riding and maybe an easy obstacle course because that could really fun. A wee bit of arena work to teach the fundamentals of good riding. Imagine horses giving lessons that instead of going in circles only, you were out and about having fun? They’d be game and easier to ride.
And you offered life coaching - talking while you’re out on the trail. Women/girls who want to ride but don’t want/can’t afford the whole expense. The person providing it all has A LOT of expense. But, it could really be cut down with INCOME IN for riding and talk therapy? Right?
For a person who was going to have two riding horses anyways and the farm maybe you could generate $500/mo. Maybe even $1k? You charged $50 a ride. You have your second horse that needs ridden 5 days a week to stay fit and help prevent EMS, right? Split up between 5-7 people.
I love thoughts like these. You could help women/teenage girls gain more self confidence while they consider navigating life. It sounds very rewarding. Ah, but those rose colored glasses get in my way.
There would be challenges of course.
BUT, how can we make having access to the incredible gift of horses. I think this could be one way. 