There maybe only so many bitcoins out there but there are other crypto-currencies out the that people can obtain at a lot lower price and use, if they so choose.
There maybe a few more places right now, that people can spend bitcoins at, because they had a head start, but I have no reason to believe that will be that way forever.
There might be 1000 different crypto-currencies out there next year that you can do the same thing with, if not more, than you can do with a bitcoin.
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