I'm sure there will be another Bitcoin. I'm also sure the founder is smart enough to know (e.g. in his note about Wikileaks) that something like this must be introduced in stages. In fact, the design of Bitcoin (e.g. the sharp inflationary tendencies stemming from lack of supply) more or less guarentee that it will be adopted by a few enthusiasts but not make it to mass consumption. Frankly, I think Sir Nakamoto also knew this from the beginning and considered this nothing more than a test run.