Usually you'll find a large moat of permission-seeking around professions such as this in the form of state licensing, required apprenticeships, insurance/bondi

Usually you'll find a large moat of permission-seeking around professions such as this in the form of state licensing, required apprenticeships, insurance/bonding etc. This lets those that have run the gauntlet charge quite a bit. You should see what it takes to be allowed to spread stucco on a wall here.