I had mixed feelings on that case. I do not see a free speech infringement in requiring parental permission when selling a video game. However, I also do not see an appropriate state government role in restricting those sales. My preference is that government stay out of that question because a parent who provides a child with the money for an unknown purchase is giving implicit permission to buy whatever the child wants (other than alcohol, tobacco, and porn, which all have existing purchase limits). I would have voted with Thomas, but my reasoning would have been that FedGov lacks authority under the 9th and 10th Amendments to intervene.
Note: None of my kids owned any video games while they lived with me. I guided them toward outdoor activities and games that did not require electricity.
kids get money other than from their parents. the store is the appropriate choke point.