The obvious thing is the high link rate with 802.11ay. But I think a less obvious but important advantage is actually the short range and inability to penetrate walls.
That sounds like a bad thing rather than a good thing, but consider the use case: Wireless connectivity to a PC which is at roughly point blank range. We don’t really want the signal to go farther than that. Or, more specifically, we don’t want the signals from neighbors using similar technology to reach our playspace.
Much of what makes the 2.4GHz band perform poorly is the high congestion on the band along with its long range and relatively high wall penetration. Your WiFi may be great until your neighbor installs their own wireless router with big powerful antennas and have it set to your same or adjacent channel. Theoretically, in 60GHz WiGig, we don’t need to care what our neighbors install. That’s a big benefit.
It’s lack of ability to penetrate walls is also a downside, of course. It makes WiGig not so much of a potential replacement for your WiFi router covering your whole house with wireless coverage. VR is such a great use case for WiGig which matches its strengths and weaknesses well, but most other use cases, not so much.
One thing I’ve wondered is how much does the human body block it? Could you lose signal because your own body is in the way of the antenna?
I think we’re going to see more and more of it in wireless VR as resolution rises.