Come on. OMGPOP was a fast rising company with a very green CEO. Expectations that they're going to act like the CEO of Oracle (boom, bad example) or something seems out of place. The CEO is a person just like everyone else, and had a moment of weakness.
The CEO took it personally. And rightly so, because in his implications Pierce was saying that everyone else were willing to join an "evil" company that treats people as "weak minded cash cows". When we make personal statements of values and their justifications ("I don't eat meat because I don't like murdering innocent animals, blood on my hands"), we naturally raise the hairs of those who make different decisions.
EDIT: Normally I just bear those downvotes, but in this case I find them a little disturbing. The whole narrative around this has taken on a distinctly "we are the 99%!" type of schism. The CEO is a human being too, and there is no reason to value or respect the opinion of Pierce.