There are more details on the french wikipedia article but basically Michel Becker did everything he could to make money out of the success of the treasure hunt, doing things that were either unethical or deemed contrary to the true creator's original intent.
This included taking possession of the solution which wasn't meant for him to get, trying to sell the prize for himself and releasing new clues to renew interest in the hunt which he was still profiting from in different ways.
There are more details on the french wikipedia article but basically Michel Becker did everything he could to make money out of the success of the treasure hunt, doing things that were either unethical or deemed contrary to the true creator's original intent. This included taking possession of the solution which wasn't meant for him to get, trying to sell the prize for himself and releasing new clues to renew interest in the hunt which he was still profiting from in different ways.
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