In most industries where businesses are taken over by criminals, we lose track of the dirty money quickly, for various reasons.
First, they often use dummy companies. So we have to deconstruct them, get past them and that is a complicated case to make. And when huge amounts of dirty money are involved, these people are able to get a share of the market very quickly and generate profits.
Take any construction company as an example. They put in a very competitive bid, because their intention at the time is not to make a profit, but to launder money. Their bid is unbeatable. So they win most of the contracts on offer; other companies go out of business, and their company makes bigger profits.
We very quickly lose what we call the “window of opportunity“ to prove that money is being recycled. The “window“ is open for a very short time: a few months, less than a year.