Maybe it was a tax evasion scheme - in some places governments don't tax lottery winnings. Of course, in many jurisdictions, the concert organisers probably wo

Maybe it was a tax evasion scheme - in some places governments don't tax lottery winnings. Of course, in many jurisdictions, the concert organisers probably would be liable for sales / income tax for the scratch cards, but perhaps they believed they had less risk of legal consequences for not counting this as income.