Oh I’m not claiming they are infallible, my point is that in a pragmatic sense theirs is the opinion that matters.

Here’s why I think you’re previous comment misses the mark: the court ruling was not about whether the company was monopolistic at the time of divestment (1911), the ruling was against business practices that occurred previously, dating back to 1870. It’s possible those practices were unfairly anti-competitive while also no longer creating a monopoly decades later due to other factors.