And big studios like that will have dedicated workstations which can easily be equipped with the adapters, making the lack of an ethernet port on the actual machine not much of an issue at all.

I think Tony (and others) had the best scenario for when this turns into a potential issue. For those that need wired connectivity "in a pinch." The unplanned or infrequent necessity. That's when an adapter is inconvenient at best and missing at worst.