What condition is typically not deemed as loss of playing capacity under player contracts?

In the context of player contracts in the NBA, "lack of ambition" is not typically viewed as a loss of playing capacity. Player contracts are generally designed to address the players' physical ability to perform on the court, and concerns typically encompass physical impairments such as injuries or conditions that directly hinder a player's participation in games or practices.

Prohibited substances, basketball-related injuries, and family emergencies are all conditions that can directly impact a player's ability to take the field or participate in the sport, thus being relevant in discussions about loss of playing capacity. For example, injuries are clearly covered under clauses related to health and safety, while substance abuse may lead to suspension and prevent a player from competing. Family emergencies, while serious, can lead to absence from games, affecting a player's availability and performance.

In contrast, lack of ambition speaks to a player's mental or emotional state and willingness to engage with the game proactively. It does not reflect a physical or legal barrier to the player's ability to participate in basketball, thus differentiating it from the other scenarios that are more clearly defined as affecting playing capacity.