What on earth makes you think that the business domain of Airbnb/Doordash is any more complex than what 37signals is working on? Almost all complexity in softw

What on earth makes you think that the business domain of Airbnb/Doordash is any more complex than what 37signals is working on? Almost all complexity in software is created by developers. 37signals seems to be one of the few companies that really understand this.