Looking at it a little more closely, it seems as if he deserved to be ‘struck off’ mainly for not being very good at making money.
The 42,000 figure is misleading – presumably the rail company made him pay back the full fare for each unpaid journey rather than the season ticket price, which is about 4,500 a year for each of the five years involved.
If you count the fact that he tapped out his Oyster at £7.20 six hundred times a year or so, the amount he saved overall each year is a couple of hundred quid?
So, for a grand or so, his career is forfeit, and he is 40,000 down on the deal.
Perhaps it was more about the pleasure of ‘beating the system’ rather than the actual financial advantage. But I suppose this kind of gaming is how fund managers live and breathe.