But the present controversy over so-called lottery couriers appears to have struck a deeper chord because it raises questions over whether ordinary players have a fair shot at winning, and because the Legislature had largely been kept into the dark about the intricacies of courier companies' business practices.

The Texas Lottery Commission’s executive director said Monday he would move to ban couriers from buying lottery tickets after finding that state law bars the practice, an about-face from the agency’s yearslong claim it had no control over such third-party sales.

The person who won the $83.5 million prize bought their ticket through an app called Jackpocket, a subsidiary of the sports gambling company DraftKings.