As soon as companies get big things change a lot. Even if they are still considered medium sized. I once switched from a 20 person startup to company with more than 1000 employees. In both cases I was very close to the CEO. In the startup I could access almost everything whereas in the bigger company I was not even able to get a list of all repos in our central source code repository system. And of course there was no technical reason for that. It was just politics.