They will do what makes them the money. Do not expect Wally World to take the high road on anything, they are in business to make money and that is where their allegiance lies.
I really would have liked to have been a fly on the wall at their meeting with the VP. I wonder what he offered/ threatened them with? They would be vulnerable to all kinds of government intimidation and bribes to throw gun owners under the bus.
While Walmart not selling guns and ammo anymore would raise my shooting costs a bit it would by no means be the worst thing could happen.