Yes, I watched some drone light-show/fireworks displays recently, and thought, 'wait till the drones are the size of flies, these shows will be happening in restaurants, bars, in your living room'. Imagine walking into a room full of fireflies that move around you as you walk, etc.
Bottleneck has been and continues to be energy density. But eventually there will be a breakthrough in battery tech and we will reach new heights of utopia/dystopia.
