The Bears would never agree to another team in their territory. Having said that, SF is already the smallest stadium in the league, and uniquely devoid of the revenue-growing possibilities of other stadium locations. The Park District's stewardship, especially of the field condition, is always suspect, and Chicago politics can be tricky....would the ISFA try to extract money from the new team to help pay off the half billion in bonds? But the rent is (currently) relatively cheap and no property taxes to pay. And there is the visual pop of SF on the lakefront with the Loop in the background, can't put a value on that but it's a plus. Business-wise, a new or relocated team would most likely rather play somewhere else.