Why on earth would Walmart sell Lionel and MTH et al trains? Contrary to the myth, the total collective O gauge $ buying power could never get on Walmart's radar. Goodness, between all the staples, i.e. groceries, clothes, housewares, pharmacy/medical, jewelry, pet supplies, lawn/garden, tools. paint, automotive, toys, crafts, where would you imagine the sales figures for Lionel odyssey and legacy would rank. What percentage of the American population wants to shop for o gauge trains versus the previously mentioned staple items.
Add in the warranty repairs, out of the box failures, and well....
There's a reason Walmart and others are successful. Business mgmt without emotional attachment.
As mentioned before, the hobby shops fail for a reason and it's not poor mgmt. Primarily a shrinking market.
But hey we've been through this many times before.