Its similar to Tablets. Nobody sees a fucking point in a redundant device until people see it.
Many people still dont have tablets but it is nowhere an unneeded device. It is successful.
This VR/AR glass is indeed the most advanced and well designed glass, miles ahead of what is available. Now it depends on how well it is executed bc some feature are actually useful and intriguing.
Tablets have been around longer than Ipads but they werent nearly as well designed and advanced as when Ipad was announced