Basically, measurment is comparision an object to reference standard. If the object can't be measured directly due to complex or innovative nature, there are attempts to make assessment of the object or its attributes by comparison with somthing similar one. When it comes to analisys supply and demand or user base, "tulip bulb" and bitcoin attributes comparison are incorrect. Does bitcoin like tulip bulb? If it does not, then why there are talks about "tulip mania" as well as "how much bubble bubbled" over and over. All the talks could be regarded as an attempt to make assessment of future market price action. Actually it would be boiled dawn to two questions: Will bitcoin move down to zero level? What level high will bitcoin achieve in the future?
Both questions have been discussed many times.