It is not, like the THz band, which is why it’s very interesting for telecommunications. There is more bandwidth available in a tinier part of the spectrum. It’s like comparing the ipv4 address space to the ipv6 address space. And no license required.
how do you license ... light?
How do you license focused beams of microwaves? Supposedly in some jurisdictions, if you aim a microwave beam across the window to another building, you need a license. (Because the telco monopolist has has some government bureaucrats in their back pocket or something.) Could you get around this if it's light?
People will license anything. Something you can get over the counter in one country needs a prescription in another.
I wouldn't put it past the FCC to require a license for your car headlights if you hook a transceiver up to them.