No. The higher the frequency, the narrower the bandwidth needs to be, so there are numerous "channels" available. Then, most devices that will use those frequencies are fairly modern, so they automatically "hunt" for open or unused freqs. On top of that, transmission is necessarily digital, and there are packet IDs that tell the device what to pay attention to and what to ignore, much like your modem/router does. Finally, I think the devices that operate in that range are limited to power levels that keep their sphere of influence (operating range) pretty small.