Comment by bluGill

> You can't "build trust" if your primary motivation is to sell stuff to your contacts

That is false. You build a different type of trust: people need to trust that when they buy something from you it is a good product that will do what they want. Maybe someone else is better, but it won't be enough better as to be worth the time they would need to spend to evaluate that. Maybe someone else is cheaper, but you are still reasonably priced for the features you offer. They won't get fired for buying you because you have so often been worthy of the trust we give you that in the rare case you do something wrong it was nobody is perfect not that you are no longer trustworthy (you can only pull this trick off a few times before you become untrustworthy)

The above is very hard to achieve, and even when you have it very easy to lose. If you are not yet there for someone you still need to act like you are and down want to lose it even though they may never buy from you often enough to realize you are worth it.