A lot of people treat choosing their cofounder with even less importance than they put on hiring. Don't do this.

You really want to know your cofounders for a while, ideally years.

Press releases are easier to write than code, and that is still easier than making a great product.

You don't need to make the structure complicated, in fact you shouldn't. All you need is for every employee to know who their manager is.

You should be able to describe any employee as an animal at what they do.

Share results (financial and key metrics) with the company every month.

So if you want a culture where people work hard, & pay attention to detail, focus on the customer, are frugal: you have to do it yourself.