[johannes1234321]

His primary job is an employment, not his own business. He reports to his coach etc. His side businesses like marketing the CR7 brand is most likely outsourced to a large degree with little to none daily activity by him.

A singer writing his own songs or an actor always looking for roles to play might be a business, while typically they are controlled by a record company or movie studio, which again isn't really like running a business on your own.

[pmontra]

Furthermore he plays in a team. Golf or tennis players would be more appropriate examples.