When camping was new, relatively few people went camping. The most exciting, adventurous and challenging way to camp is, of course, to bring your own food and gear and rough it, just you and nature.
Some businesses saw an opportunity to introduce a lot more people to camping and make some money. They'd build some cabins around a lake and do some marketing. It's not the same, but most people weren't going to rough it in the woods anyway, right?
A Harvard kid announced a new camp one day for other Harvard kids. Everyone who was anyone started going to Mark's camp. If you knew people going to this camp, and you wanted to really connect with them, you had to go to Mark's camp to do it. Sure, there were other ways to connect with them, but Mark's camp is where people are spending a lot of their time and Mark's campfire is where they share their stories. In fact, over a tenth the population of planet Earth has made Mark's camp their hangout.
You still love camping as much as you ever did, and you want to connect and share stuff with all your family and friends. But it really grates on you that you have to walk through Mark's gate and live by Mark's rules in order to do that. Isn't there some way you could round up a crew, leave Mark's camp behind, and strike out into the wild somewhere, just you and your friends, to do some real camping?