They are hoping rather than assuming because if there isn't sufficient demand (sufficient paying demand, not people who wouldn't pay just using it for free because they can), there is no way back for them that isn't an amusingly catastrophic collapse, and they are scaling up as if the demand is a forgone conclusion because it just isn't worth trying to plan for the other option.
They are hoping rather than assuming because if there isn't sufficient demand (sufficient paying demand, not people who wouldn't pay just using it for free because they can), there is no way back for them that isn't an amusingly catastrophic collapse, and they are scaling up as if the demand is a forgone conclusion because it just isn't worth trying to plan for the other option.