Why nationalize them? What would be the point? The purpose for nationalization is to give preferential treatment to the state. Walmart already does that and (in my personal opinion) does for the people as well.

Although the only thing I wish they cut back on was their employee culture cult stuff. It reminds me of McDonalds where you have to say thank you to a supervisor after everything, even if they're yelling at you to be a dick. It's like the f'ing military. That kinda brainwashing garbage needs to go.