There's no reason a Barber couldn't charge based on time spent cutting your hair. There's also no reason a lawyer cannot charge a fixed fee, which is more stan

There's no reason a Barber couldn't charge based on time spent cutting your hair. There's also no reason a lawyer cannot charge a fixed fee, which is more standard for document drafting. You might not want to pay a lawyer a fixed fee for a case though, as that would incentivize them to put in as little work as possible. And none of this has anything to do with the licensing, which artificially restricts the supply of Barbers and Lawyers, letting them charge more regardless of the billing scheme.