I can certainly see why East Coast can claim a 100% success rate. If this did go to court, I doubt anyone could prove any actual loss to the TOC (indeed, someone could sit in the seat after the person alighted, and move if they magically re-appeared), and one day you'll hopefully get a judge that will consider such rules to be unfair and call into question the whole NRCoC.
Nobody in the industry wants that, so nothing will change and cases like this are unlikely to be tested.
As an aside, I wonder what groups of people would have prompted the Daily Mail to report on this in a positive way, as against a negative way in support of the rail operator. With the way the DM works, I believe they COULD have taken the other side if the circumstances were slightly different.
Professor; Positive
Young female student; Positive
Nurse, teacher or care worker; Positive
Young male, wearing tracksuit; Negative, obviously playing the system - hang him...
Foreigner; definitely playing the system, and what's more I bet there are loads more doing it every day... abusing tickets designed to enable professors, students, nurses, teachers and care workers to travel cheaply. Hang them THEN deport them...
I'm sure you can all some of your own... !