drones may still be a thing, and weren't nearly as hyped as blockchain.
my barometer for penetration is how often the non-tech people talk about it, e.g. goofball uncle didn't buy a drone, but he went hard on BTC. if he's still holding he probably made money recently, too.
my barometer for penetration is how often the non-tech people talk about it, e.g. goofball uncle didn't buy a drone, but he went hard on BTC. if he's still holding he probably made money recently, too.