Half a year later: The site is up and running. We have invested some of our money and spent months of work on it. And now came the second part. He needed to go

Half a year later: The site is up and running. We have invested some of our money and spent months of work on it. And now came the second part. He needed to go out and start getting customers while I continued ironing out the tech parts. For future reference, this is where you went wrong. He should have been out there selling screenshots and powerpoints, thus generating leads and design feedback, for the day one. When something can fail, it should be given opportunity to fail as soon and as cheap as possible.