As a product you're exactly in the right place to be. You see, your product isn't something "cool" that people should use. It's now a fact of life. It's an extension of your users environment. This means that they take it for granted, because they just can't imagine life without it.
That's an amazing position to be in for a product. Think about it. When was the last time you thought, "hey I'm going to send you a messing using an electronic messaging system that allows me to send files and store things on a server!" You just say, "I'll drop you a line". You don't even need to talk about the technology over here! Email has become just another fact of life.
Some technologies become so ingrained into your life, that they are the technological equivalent of drinking water. It's something completely natural that you will never think twice about.
This means if you play your cards well, you're here to stay...