I've long back realized that it is not just the big corps, but every employee of a company, after a while began to think everything outwards. Their focus, the work, they playbook always from them. There are only a very few that things from outside.
During my consultation, the team I was helping keep talking about "Our App", "Our Process", "Our Use", "How do we get this data into our System?" I had to ask them multiple times, "How does your users or customers outside of your company uses them?" "Have you thought of how people usually do these kind of steps?"