Dan Gilbert and Tom Gores have recently floated the idea of bringing a Major League Soccer team to Detroit. The initial plan for the team’s new stadium was to place it on the site of the unfinished Wayne County jail, and there’s been some talk about financing the project, in part, with taxpayer dollars. Attendance at MLS games has been strong and growing, averaging 21,574 fans per match in 2015 — more than the NBA’s average of 17,826. But despite the growing popularity of soccer in the United States and despite what proponents of this new team might say, a...