AMD seems like a bit of a stretch. They have been hurting for sure, but with two of the three major console manufacturers using their chips, it’s hard to see them going out of business anytime soon.
Radio Shack is an interesting case. Nobody knows how they are still in business, not even the CEO. There seems to be some sort of enormous corporate inertia keeping them running. Or maybe the entire corporation is a gigantic money laundering scheme?
Zynga was a company I knew was going to be dead before too long. Anybody who has played one of their games knows that the whole platform is built on bad behavior that social media companies are shutting down. You can’t behave badly for too many years before people want to leave. It’s not like they’re a monopoly or anything, there are thousands of alternative games on your typical social media platform. If you’re Verizon you can get away with that, but not a casual game company.