Enjoyed reading the story and appreciate the challenge to balance out sales and development. They are both important but need controls to ensure 1) money comes in and 2) you develop and focus on the right product.
The point that stood out was the final lines on the importance of sales. This almost promotes the mantra of building sales first, product second; and ensuring you are having money arriving in to pay the bills (and/or investors).
Having recently heard profitable entrepreneurs speak, the common story is how when they spoke with potential customers about their idea (even pre MVP) and customers paid them. Yes, paying customers suggest you are on to a smart product. Maybe some merit in this approach.