Now, I totally agree with your comment that other states can let Arizona do the testing then reap the rewards. But at the same time, I think there can be other

Now, I totally agree with your comment that other states can let Arizona do the testing then reap the rewards. But at the same time, I think there can be other indirect benefits: Arizona getting known for being innovative, for example. Arizona was getting in the news a lot for positive self-driving tech things, and that's great. It's bad that they didn't vet Uber carefully enough and thus a woman died, but the general attitude of encouraging innovation even without direct, immediate benefits is a great thing.