Only because you declare that something has the value of 1 billion doesn't make it so.
First, you're not giving away physical goods, but eligibility for a service - but what exactly this service entails and how useful it is can still change in the future.
Second, it's a service that requires a substantial level of commitment from your clients - a commitment that causes risks for the clients in its own (lock-in) as discussed in many other places in this thread.
