Have you watched The Defiant Ones[1] on HBO? I can't exactly recall if they were giving Beats out to players for free, but there is a segment of the documentary

Have you watched The Defiant Ones[1] on HBO? I can't exactly recall if they were giving Beats out to players for free, but there is a segment of the documentary where they talk about how ubiquitous Beats became because players were shown wearing them in the pregame. You could be pretty spot on with your assumption. 1 - https://www.hbo.com/the-defiant-ones https://www.hbo.com/the-defiant-ones