Egos are generally suppressed because it is harmful. Business and compensation are driven by referrals. Consultants must be kept happy or you simply will not make money. Nursing staff and ancillary staff are the eyes and ears on the ground, not residents. Developing a strong working relationship with them is incredibly important if you want to excel. The attitude is less, "lets figure it out" and more "lets get this done".
Residents/fellows dictate all operative reports, even if you are an intern. We have a copy of this in our office:
Amazon product ASIN 1461404509 in the 3rd edition 2 of our residents (including yours truly) are authors. It is a reasonable starting point, but we also have a large library of our own specific op note templates that are broken down into components based on billing/coding needs. But, it isn't enough. It takes a lot of dedicated teaching time by faculty and senior residents to coach juniors on why their notes need work. The main filter for us are our coders, we have 4 working with us and they sit in the office next to ours (ie a 5 second walk). When you start as an intern with us, you get to know them quickly because they will send you (not the attending) questions about your consults/op notes. It is infuriating when you first start out because you just want to get your work done and a lot of the time you don't understand what was going on in the first place and now you have to document it, so of course it looks like crap. But, like everything practice isn't enough, perfect practice is what you need. That feedback loop is what makes our seniors comfortable with the process, at some point it becomes second nature and you can't help but see the holes in documentation.
Beyond that, it is culture, pure and simple. I know the cost of every single item in the OR from my EVAR stent to the wires to the sterile gloves. Why? Because our decision making IS influenced by it. Being able to do an entire case with one wire makes your practice more economical and efficient. Sure, a single case may not make a big difference, but when you do 3-4 cases a day over a career, it adds up pretty darn quick.