Not only do they fear you but they spend massive amounts of time and money to make sure your voice isn't heard. The espionage tactics these huge companies use are often illegal and usually immoral which is the very reason people are speaking out about their practices in the first place. From hacking computers, dumpster diving, stalking relatives, and campaigns of disinformation it seems nothing is off limits when it comes to crushing opposed views. Here are some amazing details from Alternet.org.
12 Corporate Espionage Tactics Used