I believe value in context is the beginning of shared trust and shared sense of quality. It’s specific, it speaks for itself.
To build trust, provide value in context. Build trust first. That’s the “charity” part of trust. (The others are integrity and competence, according to Trust Building on Digital Labour Platforms: the Worker’s Perspective). Charity is being willing to provide value in context first - without expecting demonstration of value in context from others first.
Related: Utility is Contextual.