Earlier quoted context omitted.
My favorite future use case is electronic cash with privacy . There are many LEGAL activities that people do not want to show up in a central database. For example, think of many things related to love and relationships. "tantamount to waiting for a greater fool to buy out the current players" <= this is like investing works in general, or? ;-)
> many LEGAL activities that people do not want to show up in a central database Unfortunately cryptocurrencies aren't just a central database they're a distributed database - all transactions are public. You can try using a tumbler service but since these are obviously money laundering havens they're not going to last long.
Not the case, see payment channels.