Is the PGA (Professional Golf Assoc.) out of line in punishing the golfers who moved to the Saudi-sponsored league?

The PGA has held a monopoly on how golf is managed and how golfers are ranked, for decades. They think they are all-powerful, sort of like the NCAA in college sports and the National Association of Realtors in that field.

Saudi money is backing a new, competitive golf league that is not approved by the PGA. Seventeen golfers moved to that league.

Is the PGA pissed off because they are no longer a monopoly?

Should they have seen this coming? Don’t monopolists eventually get their come-uppance?

Will a competitive golf league make golf a more accessible sport?