The internet enables the arbitrageur. More and more people are going to make their living doing arbitrage.
Example: a guy who became proficient at acquiring Hermes handbags - specifically Birkin bags, which are scarce and expensive. They start at $10,000 and can be found on ebay as I write this for up to $60,000.
He managed to buy over 130 bags a year, even though there is supposedly a 2-yr waiting list. His book details the various methods he used. Then he'd sell them (mostly on Ebay) for profit.
I posted once that over 1.3M people make their living full-time from Ebay. And those are the people that deal in actual goods. There's probably another 1M internet arbitrageurs who deal solely with virtual goods or transactions.
Eventually a significant percentage of many people's income is going to come from arbitrage.