All very good points. Although I would say that the speakers...

All very good points. Although I would say that the speakers they produced several years ago were light years away from the quality that would be required to ensure widespread adoption of the technology. What we haven't seen is whether they have created something that is better than current available technology. No point us having tiny, mass producible speakers that aren't brilliant in sound. I'd be happy if they proved they can create the speaker at the quality required... Even if they can't yet make them on mass at the required price. It's demonstrable progress I want to see...assuming I can't have it all that is!