This _sounds_ like great advice, and "I want to believe" too, but this article is not convincing. The way it's written, I just see some principles flatly stated and not even backed up with anecdote--it's not even a data point. The HN title "A Learned Learned..." contains the most indication that the OP is speaking from experience and not off the top of his head.

Forgive me for not knowing the OP, his experience/reputation, or his company and its product. I expected a bit more explanation for his position. Also, I'm a bit skeptical of the "refundable credit" for a non-existing service or product. I'd like to hear more about how that's possible.