In response to your second point, if there is a good BitCoin economy, a business might be able to earn BitCoins, and spend some of those BitCoins on costs to buy services from other BitCoin acceptors, and maybe even issue dividends in BitCoins. Shareholders could use those BitCoins to buy things directly.
These transactions require computational resources to get them into the block chain, so probably would cost money, but with low barriers of entry, they would tend towards the computational cost of getting a block into the chain.
However, unlike with a credit card, there is no requirement that amounts get converted back into a government-backed currency after every transaction.
These transactions require computational resources to get them into the block chain, so probably would cost money, but with low barriers of entry, they would tend towards the computational cost of getting a block into the chain.
However, unlike with a credit card, there is no requirement that amounts get converted back into a government-backed currency after every transaction.