As always, thread devolves into an ATL v. WPG argument on relatively minuscule attendance #'s and arguing the difference between 1-5k. Small numbers. Regional broadcast viewership is the better measurement and larger numbers. The Thrashers had horrible, and horrible is putting it politely, local/regional average viewership when they existed. But that was then, of course. The Jets when they have a bad # regionally it's still well, well over 100k (over 5-to-10x the typical Thrashers RSN viewership) and when the Jets get good regional viewership, it's over 300k.
The hockey fanbases are not the same. That's a more honest assessment than arguing about comparatively smaller attendance #'s, the minuscule differences between and any future hypothetical attendance #'s.
Viewership is why the Jets get paid for their regional/local broadcast rights. And they also don't have to worry about the RSN landscape that exists in the U.S.. Atlanta would/will get next-to-nothing for their local/regional broadcast rights if/when the time comes. They'd be better off putting it OTA essentially for free, for the reach and accessability.
A major (MAJOR) difference in corporate support, or at least the (likely, imo) potential for. That is a more than fair argument for ATL, but any claims of bigger/better or even a comparable fanbase or comparable fan support is a losing battle. Extremely underestimating how many people watch hockey in Canada as well as how truly few watched the Thrashers. And it's not likely to be all that much different for a future franchise.
Best case is similar to Nashville, Carolina, Florida, no one watches locally (relative, compared to say the Bruins, Pens, Rangers, all 7 Canadian teams, etc..) but the small passionate fanbase(s) they DO have fill the arena(s) and keep them as healthy enough, functioning franchises. None contributate anything nationally, in terms of viewership, and hockey is so NOT watched locally/regionally that in Miami the local ABC affiliate has chosen multiple times to air local programming nonsense instead of airing the national NHL on ABC broadcast. And so few would be watching anyway that instead of any major backlash we generally hear from the same 1-2 people pointing out that they're not getting the NHL on ABC game in their market. Now imagine the response from any major (or even small) Canadian market if HNIC was just not shown in their city/region. Different fanbases.