First off Dallas is a large media market, and is ranked 5 behind NY, LA, Chicago, and Philly. Some rankings have Bay Area ahead. So 5 or 6. To say its not a large market is stupid.
Next I really dont know why people are giving Cuban a hard time. If he resigned Chandler were they really going to run through OKC, LAL/LAC, SA, and Miami/Chi for another Championship? NO
And then he would have been hamstrung for the considerable future financially.
Even if they dont land Deron, it was the right move. The Mavs had to get younger sometime. Plus the new CBA dictated a change in his philosophy. I would rather be one and done one year after a championship than cripple the future for a slight chance at a repeat
Talk with the local sportswriters, they are the ones that are saying the FA's are not coming.
All 'big' markets are not the same. Right or wrong the distance between NY/LA and #5 DFW might as well be the difference between 1 and #15. At least if you are being honest about people's perceptions.