The same way that if someone accidentally pays too little tax they'll be told to pay the difference and will do that, whereas if they lie to try and pay less taxes then not only do they have to pay the difference, they'll also get slapped with fines and/or prison time.
Otherwise the model is there to claim fees you don't have a right to, wait until you get stopped, put your hands up and say "oops we didn't realise" and keep all that money.
edit: Should point out I am giving an opinion on the logic, not the law.
Then I googled it and found out that is actually the name of the law. It means triple damages. It's from British English and the phrase is still correct in American English.
facepalm
Duplicate/triplicate
Duplex/triplex
Duple/triple?
'Triple' is the weird root-isolation here.
I guess the softer "b" versions come from some French influence.
or
double/treble/quadruble?
I'm more familiar with treble being used in music but I'm aware of various uses of representing three in some way.
The idea being the English language is a fun thing.