I think that Lionel is for sure trying to "test" something by opening a retail store. They know very well that their business historically WAS based on sales by retail hobby shops- local hobby shops (LHS). They might also believe that the decline of the hobby shops was/is an issue of the age of the owners, and that the expansion of the hobby business means that the LHS cannot stock items that take a lot of room, cost a lot in inventory, and are sold mainly (today) to an older market. As well, Sears, JC Penney, and almost every other retail chain that (once) sold their train sets especially during Christmas season, are losing market share, and that the toy specialists (ToysRUs) are disappearing.
We hobbyists are likely not what Lionel sees at the way to reach a younger market, and that someone has to build the train market from the ground up, not from the serious hobbyists down. If someone cannot do that, then likely the whole hobby is doomed.
If Lionel finds that sales in Concord continue AFTER Christmas, then that would verify their theories about model railroading (still viable), their product (attractive) their price point (in range of the target market).
So, why not try it, close to Lionel HQ, and "done the right way"?? And who better than Lionel??
I wish them the best- it can only be good for all of us.
From Lionel's web site about RTR train sets:
THE BEST WAY TO BEGIN YOUR JOURNEY INTO MODEL RAILROADING!