Thoughts on Why Some Cryptocurrencies Fail, and Others Don't

A well-known obstacle to the greater popularity of Bitcoin as a medium of payment is the high volatility of its exchange value. This volatility results from its built-in quantity commitment: because the number of Bitcoins in existence stays on a programmed path, variations in the real demand to hold Bitcoin must be accommodated entirely by variations in its unit value. When demand goes up, there is no quantity increase to dampen the rise in price; and vice-versa for a fall in demand.