Bitcoin investors are having a wild ride. The best-known cryptocurrency rocketed to a series of records in 2021, just three years after its price collapsed. Once seen as the province of nerds, libertarians and drug dealers, there's still little sign that it will evolve into a useful form of money for most transactions. Yet the latest bout of roller-coaster volatility comes as more big investors are speculating that Bitcoin will gain wider acceptance and shake up the financial world.
1. Why the big comeback?..