What are Players prohibited from doing in terms of representing other NBA players?

Players are prohibited from holding equity in representation businesses to avoid conflicts of interest and ensure that agents can prioritize their clients' best interests without any financial incentives that could skew their judgment. This prohibition helps maintain the integrity of player representation, ensuring that decisions are made solely based on what is best for the player being represented. Allowing players to own a stake in representation firms could lead to situations where their loyalty may be divided or where they could potentially exploit their position for personal gain over the interests of their fellow players.

In contrast, the other options involve activities that do not create a direct conflict of interest in the representation environment. Players can act as mentors or advisors, negotiate player contracts on behalf of themselves, and participate in endorsements as these pursuits are typically viewed as part of their career development or personal brand establishment rather than as agents or representatives of other players.