One talk I like to give at college campuses is such: A startup is like the obscure 1990's Playstation game Katamari Damacy. You start off with a small magic ball about the size of a pencil eraser. You can pick up anything smaller than you, but if you try to pick up something too big, you bounce off and get smaller. You start picking up paperclips and chess pieces, and then by the end of the game (spoiler alert) you end up picking up skyscrapers and continents and such.

It's like that. You start with bringing your cofounders together. Then you add your first customers. Then maybe you raise a little bit of friends and family money, and that lets you put more money into customer acquisition, which gets you more cofounders, which lets you get more revenue to hire a few more people, and raise more money, and so on.

So startups are like katamari damacy, and if you win, you end up picking up an entire industry.