PBF didn't endorse by choice.
He was like B-Hop he did it his way so did Winky.

They are the kind of business men who see it as they are the stars they are the money makers why should they have to pay someone to do something that they can do on their own without sharing profit on the hustle that they are putting down. Look at RJJ, he promoted himself and did it his way and he got Jordan as an endorsement.