Welcome from a fellow Detroiter!! Go Wings!!
I heard that Canada also played a part in the lack of WiMAX deployment in our area. The reason being was health / radiation concerns from the microwaves crossing the river. Since the signal could not be blocked from going into Canada the deployment didn't happen. Reminds me of a song from the south park movie. Lol.
I did have a WiMAX signal at Comerica park one day. I was surprised. It only worked while at the park.