Some industries already do this. It's best to learn from other industries in this case.

Engineers need to get a license. (IE, you need a license to design a dam.)

For doctors, not only do they need to get a license, in medical school, they go through a matching process that's very efficient: https://med.stanford.edu/news/insights/2024/03/match-day-med...

The AMA is one of the most succesful unions ever. At what point are we re-inventing unions?