Be careful. I agree his decision lacked foresight. But macroeconomics are vastly different than anything on an individual-company level. The number of variables involved are astronomically higher.
I'm a Friedman-ian free market adherent. Proof. So this isn't a defense of socialism. But this is me saying that this story says nothing about the viability of socialism, or lack thereof.
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On the story itself, the approach was rather hamfisted. Take Costco. It pays its employees a lot, comparatively speaking. After a year doing ANYTHING there, you make something like $19/hr., give or take. That may be a lot or a little to you personally, but it's a great wage for the industry. And the underlying thought process is the same; they're legitimately trying to give back some corporate profits to some of the lowest paid employees. A single adult can't live on the wage of, say, some of its competitors (usually ~$10 indefinitely, unless promoted), much less one with debts or children. So it has done a ton for Costco's corporate culture and employee morale and retention rate.
But look at how it was handled compared to Gravity. Gravity's change was sudden and total, and incredibly public. He lacked the infrastructure to handle the change, and the data to predict and account for increased costs of business. Basically, he bit off more than he could chew. Meanwhile, Costco, in a more traditional corporate structure, has the national infrastructure to continue making a profit without generating too much attention or angering key employees that threaten the business's stability.
So I see Gravity's failure as more an indictment of his research (or lack thereof) into the machinations of pay scales and how it affects a company, and also his execution of the concept. Less sweeping, but still significant, raises would have likely worked. And he undoubtedly made it harder on himself by calling such attention to it. Not all publicity, as it turns out, is a good thing, as evidenced by his business-owning peers turning on him for upstaging them, and higher ranking employees turning rank for devaluing their jobs compared to entry-level positions. His heart was in the right place, but his execution was tragically flawed.