Seller, though, is dealing with a different phenomenon. Even though he acknowledged that “Hamilton” could run at a profit in Chicago for another year at least, he said he does not want to have to discount any tickets or tolerate empty seats at Wednesday matinees. As previously reported by the Tribune, touring productions of the show are slated to play in cities as close to Chicago as Milwaukee and Madison, Wis., eroding what is known in the commercial theater industry as Chicago’s zone of clearance. Discounting ticket prices in Chicago threatens the value of seats in other cities, especially in New York, where good weekend seats routinely command prices north of $500. And national demand for the show remains sky-high, especially in cities that have not been exposed to the production.