You forgot the cost of insurance when you get sued by the passengers or when you get into an accident since you're racing down the road hoping people are paying attention and get out of the way. No idea what it costs but it's arguably more than an uber driver. 2x? 5x?

There are a ton of other costs. You're not paying for one employee. You're paying for many since ambulances run 24/7. They are also driven hard which means they require more maintenance. The ambulance is also full of expensive equipment and supplies.

My LLM of choice says it actually costs $1000-$2500 per ride to the company for operational costs on top of per-ride costs. You can probably ask one for a breakdown and see if it makes sense to you