Individuals are trustworthy or not.

Companies, especially companies in a state of massive flux like a fast growing startup, have no fixed traits like trustworthiness. It depends on the leadership team at the moment, pressures from external stakeholders, how bonuses and other incentive structures are designed.

I can tell you from personal experience that you can start out with the best intentions but sooner or later the power dynamics will change and then suddenly "Don't be evil" is just a joke meme.