This is a great question and it's something I spend a lot of time thinking about. In general, I'd say no one really knows at this point and it is difficult to make more than a few guesses.
So let me have a try at that:
- Banks would lose much of their ability to control the monetary supply, interest rates and exchange rate.
- The financial sector would shrink and become less profitable. Probably a good thing.
- It would become more difficult for the government to collect taxes.
- Loans would be taken out more rarely.
- Leverage would mostly disappear from the financial system.
- Economic and financial transaction would not be restricted by national borders.
- Individuals would gain more control over their own finances and money.
- Governments would lose the ability to finance their expenses through increased debt. They'd have to run more or less balanced budgets instead.
- There would be enormous redistributions of wealth as the shift to bitcoin occurs.
These are some of the things that come to my mind, but this list could be continued for a long time. I think it's save to say that these would be revolutionary changes and we would end up with a radically different world.
Will this actually happen? I don't know but I think it's possible.
Will the changes overall be positive? Impossible to know, but I'm optimistic.
Excellent answers as always:) I'm wondering about the money supply issue though. It seems to me that the transparency that the blockchain provides would make bitcoin-backed fractional reserve banking impossible. Isn't it based on a fundamental degree of deception? – Brian Fabian Crain – 2013-11-14T19:59:54.307
Fractional reserve banking (FRB) is a mundane offshoot of promissory notes, an innovation that allowed trade networks to transfer reputation instead of easier-to-steal gold shipments between branches in far-flung parts of Europe. These traders became bankers (as in you can bank your notes/scrip) and eventually institutions. I recommend The Count of Monte Cristo as it provides fascinating insight into the early banking system. Any Bitcoin gateway or clearing house is by definition a bank in the historical sense as you are using banking services.
– LateralFractal – 2013-11-15T00:09:15.813To detect FRB on Bitcoin requires to know the volume of on-block settlement trade ("gold") between clearing houses versus the volume of off-block trade ("notes") within and between clearing houses by normal end-users. As long as you can redeem your gateway's off-block notes (their wallet) for on-block coins (your wallet) it functions like any other bank. Eventually the reputation of the off-blockchain network is such as that few people bat an eye when settlement trade switches away from the energy expensive on-block protocol (i.e. Bitcoin as we currently know it). Bitcoin as preliminary Fiat. – LateralFractal – 2013-11-15T00:10:04.030
@BrianFabianCrain The drive towards a fractional or even completely fiat Bitcoin can occur without deception and regardless of any gold-emulating ledger protocol it initially starts with. Most people are rational microeconomic rather than macroeconomic actors. If the off-blockchain networks provide better services at a cheaper price than DIY on-blockchain transactions, then the off-block network (money supply of Bitcoin notes) will outgrow the on-block network (supply of Bitcoin specie). The same factors that drove society away from a Gold Standard can and likely will apply to Bitcoin. – LateralFractal – 2013-11-15T00:11:25.983