The court ruling was a good one, and anticipated. The federal government can either allow all gambling, or ban it all. They can’t pick and choose states where it may be allowed.
Before online gambling went wild in the US, most brick and mortal gambling was one of three sources: (1) Nevada (Las Vegas, etc.), (2) Atlantic City, New Jersey, (3) Native American tribes. There were also some other odd locations, like river boat gambling on the Mississippi River or "cardrooms" in California. As a result, most Americans did not live close to a casino. Now, you can do it from your smartphone.
And federal law said states other than Nevada and New Jersey had to ban gambling. The court said they can’t do that. They could ban gambling nationwide in federal law.
