I'm confused about the limits of bitcoin when it comes to amount of transactions. From the discussion about the blocksize limit it looks like many believe that 1 decentralized cryptocurrency will never be able to support the current amount of banking transactions (and thus will need to become a large transactions only currency). But is that true? I would think that the exponential growth of personal computer power, can keep up with the exponential growth of amount of transactions?
Systems like Ripple and MtGox codes allow bitcoins to be sent between users without actually filling the blockchain. If bitcoins continue to grow, then maybe it will be beneficial to switch SatoshiDice to an account-based system where deposits and withdrawals go on the blockchain but most bets are handled internally. My point is that there will be ways for bitcoins to continue being used in many different ways, systems being built on top of bitcoins are a better option than having a bunch of separate cryptocurrencies.
That's not answering my question.