Any company that gets a few hundred million users is changing the world in some manner. But before the said company gets the few hundred million users, it must

Any company that gets a few hundred million users is changing the world in some manner. But before the said company gets the few hundred million users, it must get 100 user and then a 1,000. I'd argue facebook at 1,000 users would not pass the author's greatness test. And yet, you can't have hundreds of millions of users before you have 1,000 of them.