We're already nine pages in and I still don't get what all the brouhaha about the Walmart issue is all about?
Companies go under or get bought out by other companies all the time. It's been 200 years since the events of Aliens after all.
Blade Runner featured Atari, Pan Am, Coca-Cola, Cuisinart and a lot of other real-world-contemporary companies and no-one complained about them.
No-one complained about Cameron's fictional Hyperdyne Systems or Creative Assembly's Seegson Company. So what did Mr. Sam Walton do wrong?