If people or businesses break the law to avoid tax they should be punished, but it is not a crime to make a profit.
Giddy do you have a pension? You may find that your income in later years depends on some of those huge profits made by big business this year.
That said, If I saw a tramp nicking a pint of milk in Tesco, I would mind my own business, but if they did it in our village shop I'd make them put it back, or more likely pay for it myself, it's still theft, but the consequences are more immediate for the victim in the latter case.
And to go back to the OP I know people who've run under another's number in London, not a problem for me under the circumstances, but if I knew someone in our club was making multiple applications or using an old number I would make it my business to grass them right up.
I just read the article because I see these guys a lot at races, they call themselves after the characters in Captian Scarlet, quite funny really.
Swapping a number you can't use privately with a friend is one end of the scale, but deliberately re-using old numbers is taking the piss.
Shoplifting is fine though, I think it works best when the shopkeeper is running a small corner shop and can't even afford to buy stuff himself, and the thief is well off but has a finely tuned moral compass that absolves him of any actual moral responsibility for his actions.