EA are far from the worst company, they get these awards because a bunch of misguided angry gamers hate EA and descend like a hoard to vote. Most people do not care and never vote. Ignoring the fact that EA isn't even the worst company in its own industry for the moment lets look at some other US companies.
Lets look at Chevron/Texaco. They spread over 20,000,000,000 (20b) gallons of Toxic waste and 17,000,000 gallons of crude oil across large areas of a fricking continent over a 20 year period. Kinda worse than the ending of Mass Effect 3 hmm?
How about the Dow Chemical Company? Well they had some dangerous incidents in the past but lets look at the big one. A subsidiary of theirs used dangerous working practices and a massive leak of a toxic gas exposed half a million people to toxic gas. nearly four thousand people where killed. 40,000 others have been left with serious disabilities, in a country with virtually no support or welfare. The subsidiary admitted it and paid some compensation to the government but somehow for some reason the money basically disappeared and the victims got practically nothing, I am sure that had nothing to do with the alleged corruption. It would be wrong to accuse them of paying bribes wouldn't it? They have yet to agreed to cleaning up the site, its still heavily contaminated and possibly leaching chemicals into the water table. Well no big deal, it cannot compare to the micro transactions we got in Dead Space 3.
These two are the most graphic, I could go on and past page after page of US corporations that endanger their workers and that have bad business practices and are generally helping to destroy the planet, the only planet we have.
But no it doesn't matter, Dragon Age II sucked after all.
Disclaimer,
I am not attacking the US here, they are the focus because the topic is about the vote about "worst US company". The US is not the only nation to have corporations like that, many others around the world are even worse and do terrible things too so I am not singling out the US or anything.