Do you really want law enforcement wasting time and resources (read, taxpayer money) on these pathetic civil fraud schemes? I'm sorry, there's much bigger fish to fry.
While I hear you - there is also an element of "look out for the pennies and the dollars will take care of themselves".
Meaning if it is unacceptable at a small level - people are less inclined to try it at a bigger level.
And while the big guys are happy to arrange that the small guys take the hit. If you keep taking out small guys early on - there will be fewer turn into big guys.
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Like graffiti - immediately remove the first bit and more of it is less likely to appear to mimic the first bit. You actually spend less cleaning up.