No other company in the internet age has done what Facebook has. Zuckerberg -
Copies every product he sees. Copied Twitter, Snapchat. Lifted features from Google+
Overwrite people's public-facing emails, which hurts being able to use competitive services https://news.ycombinator.com/item?id=4151433
Apparently wrote some tool which allowed for data transfer into FB from Myspace, but not the other way around (yes, I know. In many ways Myspace was hot trash, that doesn't mean he wasn't a malicious actor to extreme extents
Blocked links to competition
Other things I can't remember right now
Say what you will about Myspace, or Friendster, or Google+ (I'm annoyed as anyone they thought a great method to get people to use it was "ok, we'll ask you again later" on Youtube) but Facebook has always rigged the game, they've been bad actors
The "Zuckerberg Method".
He wasn't the first, and won't be the last, but I'm pretty sure he has thrown the most shit.