We're kind of seeing the same here
I can't remember where I saw it, it may have been in this very place, but the eeeediots at ofcom are planning something similar, with the result that many companies that hire out wireless microphones and audio kit are going to need lots of compensation. (I'm not calling them eeeediots because of the microphone issue, rather just because it's Ofcom)
Someone needs to be doing a proper review of frequencies, who is using them, who NEEDS to be using them, and so forth. Susceptibility to interference should be part of this investigation.