Sure. They'll sell at the peak and buy at the bottom because it's a well known 4 year cycle programmed into the protocol. If the price is expected to appreciate 5-10x from any other asset in the market every 4 years that's a bet you should make, even if the timing of the peak and trough is hard to see. But the price floor increases over time as the trade becomes better known globally and the lottery odds expand. Eventually there is so much noise it all evens out and becomes a generally smooth slide into a stable store of value. It's network science and game theory that I personally consider much smarter than anything I could create (having deployed technology built on network science in exchange for money in the financial sector). And much more democratic than is possible in the traditional financial world. Frankly, the longer I study this the more impressed I am.

Usage as in number of network participants. People investing time, energy, risk into the system. Miners, traders, validators, second layer operators. Similar to members of facebook, servers in the internet. Price as in market price. And I'm only talking Bitcoin here.