I'm not sure how he "got away" with anything. You are permitted to own multiple teams as long as they are in the same city.
If anything, Stan Kroenke is the one who has gotten away with things as his "wife" owns the Colorado Avalanche and Denver Nuggets while he owns the Rams. He also owns the Arsenal FC in the English Premier League and the Colorado Rapids of MLS and the Colorado Mammoth of the NLL, with a few women's teams sprinkled in to boot.