Indeed, isn't that great! We read all these popular books on how to make startups better, while sometimes all we need to do is open our eyes and watch others.
Some of the most memorable business advice I've gotten is from a restaurant owner.
He told me stories about how he's had to declare bankruptcy twice (he's not proud of it and tried to avoid it, but ultimately had little choice); how he's had partners who nearly ruined the business; how he's had to deal with changes in accounting practices; how he's had to deal with "local issues" (such as police officers, nearby merchants, etc); how he's had to manage relatively uneducated employees to build them into an efficient team, etc.
I have no doubt. We, in tech community, take a lot of things for granted. It's easy to sit at home, in underwear, and write code. Yes, the code might be hard, but it is not the same experience as the one would get at a kitchen table, chopping potato all day. Props to all the hardworking folks!