For telepresence to work, you need to feel like your coworkers are in the same room, such that you think nothing about turning around to them and asking them a question. Video doesn't do this; something about the screen makes you feel like you need to present a performance, and that destroys the spontaneity that builds trust in person-to-person interactions.

Will a hologram do it? I don't know; real-time holography isn't good enough to evaluate it. Would VR/AR, ocular implants, direct brain stimulation, just a giant wraparound screen, whatever? Also don't know.

I do know that given the choice between having a car drive me to work for a half hour vs. being able to conduct business with anyone in the world without leaving my house, I'd much rather have the latter.