Sony: Their arrogance at the start of this gen. They also treat europe like crap even though it is their strongest area and gives them most money (strong euro)
MS: Ridiculously overpriced accessories . WLAN adapter over 70€ (this should be build in) and 120gb HDD over 100€...WTF really? Unreliable hardware (RROD) and charging from online playing.
Nintendo: Overpriced hardware. They also focus too much in casual gaming. (for my taste)