[ngcc_hk]

Why is that not easy and widely used as nearly all devices we used like camera (dslr to car camera) and remote controller all resolved to stop WiFi and switch to another mode etc to connect.

[caust1c]

Partially because of chip capabilities, and partially because understanding networking is hard.

I don't think most chips can do this fwiw, but it's definitely cheap enough now that cameras and IoT devices will probably start doing it everywhere.