One general excuse from Rolex and all similarly situated to refuse to supply is:
"To protect the brand's name and consumers satisfaction".
This is an oxymoron, our consumers satisfaction is 18% above Rolex SF.
According to CheckBook magazine watchmakers rating, year after year.
Furthermore the Sherman Act states:
"An unlawful monopoly exist when only one firm controls the market for a product or service, and it has obtained that market power, not because is product or service is superior to others,"
Watch Servicing Competition
Keep Prices and Quality in Check