I don't think Hololens is going to do anything really. 3D TV is basically dead and I'm not sure that any tech that requires people to wear something on their their head will be successful. Not to mention we have no idea if those who get headaches from 3D will have similar problems with Holographic images.
Anyway it's Microsoft so it's a case of over-promise and under-deliver. Honestly I have no idea why there are still people who believe anything that comes out of that company's mouth.