I'm an extrovert developer, but I still am in the process of creating a business that provides massive value to the world, so take whatever I say with a grain of salt.
I've work in startups with and without VC. What I've seen is that there is a lot of chaos and on the manager level, an astonishing lack of understanding about what technology can do.
That usually drives to really poor hiring decisions and ask for vague requirements that usually are incomplete, not a great solution and late.
Here are some great books that I strongly recommend:
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