I remember seeing a report about a patent Apple had for lenses that are one size fit all and can be adjusted in store by an employee. If they are able to make stylish glasses that can fit any prescription, at a decent price, that are not clunky, and are functional from a technology standpoint, then AR will be their next huge money maker. The advantages, speed, and potential convenience of AR glasses can be the biggest market disruptor since the smartphone if done right. They could not just create a new market for themselves, but they could also take over the prescription glasses market. Old glasses stores would be like a Rolex store. Fine for a status symbol or some style, but not nearly as functional as the new thing.