Mr. Lynton is mad at the Internet because it allows people to easily copy copyrighted content, and he wants to create rules (guardrails) that will make it harder for them to do it.
Without going into details about copyright, piracy, business models, and the entertainment industry (or the fact that the entire post stems from the fact that Lynton had recently said he "doesn’t see anything good having come from the Internet"), let's step back and ask a simple question: what is the Internet?
Strictly speaking (Wikipedia definition), it's "a global system of interconnected computer networks." What are networks good for? Sharing information. In practice, this means it's a system that makes it easy for people to share information.
Mr. Lynton largely ignores this fact and goes on to compare the Internet to the introduction of the US Interstate Highway System. "It completely transformed how we did business, traveled, and conducted our daily lives. But unlike the Internet, the highways were built and operated with a set of rational guidelines," he says. This is where he's wrong, because that comparison doesn't stand; but before I explain how, let me add another important quote that shows that Mr. Lynton actually knows he's wrong, he just can't stomach that fact:
"I cannot subscribe to the views of those online critics who insist that I "just don't get it," and claim the world has so fundamentally changed because of the web that conventional practices concerning property rights no longer apply.."
Unfortunately for him, this is exactly right. The Internet is nothing like the Interstate Highway System. It wasn't created by the government as part of a plan, it emerged from a small project (ARPANET) and absolutely no one could predict where it was going. The rules he mentions are - the bigger part of them, at least - necessary for the highway system's operation, while Internet chirps happily without the rules he'd like to impose. Most importantly, the Internet did fundamentally change the way we live our lives. You want a travel-related metaphor for the Internet? Then imagine someone inventing Star Trek-style human teleportation, and its impact on the car industry.
Now, what Mr. Lynton is suggesting (without offering any clear solutions) is imposing rules to this system that will make it easy for copyright owners (read: big corporations) to control the way their content is used and shared. Specifically, he wants to make it harder to share certain kinds of information on the Internet.
As I've often pointed out, trying to stop sharing is trying to fundamentally alter the Internet and it's never going to work. Mr. Lynton is trying to instill sympathy over all the hard working people who are going to get hurt by the Internet. Mentioning Wolverine, however, and its premature Internet leak does not really help, since the movie was a huge box office success.