They practice Case Law.
What someone needs to do is go back and look further into who influenced the bar policy, who created the education system for these lawyers, because just like doctors, and police officers they revert to their training when they're under pressure.
Who co-opted the legal system ?
These are the real questions.
The Medical System was co-opted in the 1920's by the Rockefeller's and drug companies. They setup the training, education & licensing systems for doctors.
In the 1920's the Rockefellers co-opted the public education system.
"Take hold of the future or the future will take hold of you." -- Patrick Dixon