Ambition can often drive people to pursue their goals with greater determination and commitment than need alone. It can inspire individuals to go beyond their basic requirements and strive for more, which sometimes leads to a deeper sense of purpose and achievement. However, this ambitious pursuit can also make people more loyal or committed to their ambitions rather than genuine trustworthiness.
In the context of the quote from James Patterson's book Roses are Red, it suggests that ambition can create a form of dependency or servitude. People may become so driven by their ambitions that they become obedient or devoted to their goals, sometimes at the expense of moral or ethical considerations. Essentially, ambition can compel people to act as more reliable or devoted followers, but not necessarily more trustworthy.