Internet camera's/switches

Not so much an RV question but certainly could apply, with the advent of all things using a Wi-Fi network( camera's particularily)....I wonder at times how long before the network they work on, generally 2.4 ghz, is obsolete. Most cameras/switches tell you up front that they only work on the older frequency range....ones that I've seen anyways. With 5g and 6g not so far off, will it simply be a software upgrade or will all this we are buying now be worthless?

I'm not panicked but more curious so if anyone has input .....I'm all ears.???? or maybe I'm totally off base, show me the light!