I used to work in startups, and wondered this all the time. Then I joined a big valley tech company, and now I understand. It's because they hire smart and amb

I used to work in startups, and wondered this all the time. Then I joined a big valley tech company, and now I understand. It's because they hire smart and ambitious people, but give them a tiny vertical to work on. It's a person level problem, not a technical one in my opinion. I think you solve this by designing your stack and then hiring meticulously, instead of HIRE ALL THE ENGINEERS and then figure it out (which is quite obviously uber's problem)