With a technology shift, the coins will be concentrated to those who have invested in leading technologies, thus the rest of the people who want to get coin have no choice but to buy, thus push up the price dramatically. But this time when there is no large technology advance in horizon, the dramatic price swing might not happen again
I'm always curious as to why people without bitcoin have 'no choice' but to buy bitcoins from the few that own them. There are plenty of businesses that may want to use bitcoin, but from a customer's point of view the only really compelling reason to own bitcoins is to buy something that's illegal or restricted in their own country. It's a valid use that cannot be denied, but it's a relatively small one.