> Imagine not having to share bandwidth with your neighbors.
6 GHz Wi-Fi ("Wi-Fi 6E") is going to be a big help with this. Many more channels than 5 GHz, and the higher frequency means it doesn't travel as far. As someone who lives in a high-rise where 5 GHz is already pretty crowded, I'm looking forward to more devices supporting it.
I'll be honest, I don't see Li-Fi taking off for normal consumer use. Few users are going to be interested in arranging their home to have direct line of site between their access and point and game consoles, TV, etc. And there would need to be some very fast and reliable mechanism to handover between Li-Fi and Wi-Fi, so that you don't cut out when you, for example, move your head slightly during a VoIP call.
It's a very nice feature. Imagine not having to share bandwidth with your neighbors.
> Wi-fi works across walls, around corners and so on. Is this possible with this li-fi?
Think of this as a wireless ethernet cable. Instead of having a jack in the wall, you have a light fixture in the room.