Dead Space Extraction's problem wasn't marketing. It was the fact that the entire videogame community willed it into failure. People simply wanted Dead Space Extraction to fail. The Wii-owners, in particular, wanted everyone who greenlighted the game to lie dying in a gutter. Publishers can deal with apathy for their game but outright hate? What can you do when your consumers have willed the very universe to destroy you? It's like the relentless Angry Sun from Super Mario Bros. 3.
It was quite obvious from that Extraction would be a commercial failure from the moment of its announcement. The lightgun genre was a niche genre. Many of the success stories on the Wii can be explained by a dedicated niche fanbase for a series or a very strong license, such as Zelda, Resident Evil, or Nerf. Dead Space on the 360/PS3 had severely underperformed EA's expectations (it's likely the sales target was in the neighborhood of 3 million+ copies). It wasn't a very strong license since the first game underperformed and spin-off was in a new genre. Players who enjoyed the original game would not find the same gameplay on the Wii. While the game could standout as a third-person action horror game, it would face competition or apathy as a rail-shooter. These were all arguments presented during the revelation that the game was a rail-shooter.
If some kids on an internet forum could predict failure the moment of the rail-shooter's reveal, then just what did EA expect to accomplish? Have some out-sourced spin-off game bomb on the Wii and use to as an example to shareholders of how the Wii market was bonkers? Have an excuse to why it's acceptable to spend hundreds of millions on the volatile MMO genre, release two modern military first-person shooters in the same year, understand every single commercially successful genre through developer acquisition or grueling R&D since the company's inception as Amazin' Software in 1982, but not to understand the Wii? Maybe EA doesn't really care about succeeding on the Wii or any other console for that matter. Maybe it's sort of a game the executives play about who troll as many people as possible. Like "I'm going to say that I'll revolutionize the first-person experience on the Wii and then tell Wii owners that they are a bunch of retards who are better off with dumbed down game out-sourced to Eurocom" or "That's nothing. I swindled the entire company into grossly overpaying during an acquisition and got a nice kickback to boot" or "I orchestrated a failed company takeover that cost our company $21 million in legal fees and untold damage in our stock price and investor confidence" or "I'm going to rape my secretary."