Why do big companies suck?

(Note: In a new series of posts, now called reader's choice, I'll write about whatever people submit and vote for.  If you dig this, let me know if the comments, and submit your ideas and votes).

Before thinking about companies, it's worth noticing that many things suck. For movies, books, websites, the bar is pretty damn low. Suckage is everywhere. And this is true regardless of size – many small companies suck and medium ones too.  The real question then is why, if at all, do big companies s...