It's like exercise equipment.

If you have free weights, a bench, and a place to run, you are already 98% of the way to being a healthy fit human. There is ample information available on how to use those tools.

You don't need a trainer, a $10,000 gym machine, and a $5,000 stationary bike.

Education has gotten so insane with per-student spend, and the results are the same as the kids who had pencils and 10 year old text books.