Needs of the many etc.
I've been following this argument with (vague) interest for a few years. It's certainly a tricky one. On the one hand the law is most certainly on the side of the Hams. On the other side, Home networking kit is vastly more useful and will continue to be sold regardless. I was trying to think of a parallel and the only one I could come up with was cars.
When cars first appeared all road-laws were (obviously) in favour of pedestrians, horses, carriages and (to a lesser extent) bicycles. However, it quickly became obvious that cars were vastly more useful and were going to take over road use no matter what our law makers did. Therefore they did the sensible thing and changed the law in favour of car drivers. Now, pedestrians, cyclists and horse riders are 2nd-class citizens (at best) on our roads. There is no moral justification for this. They were there first and are more vulnerable. Theoretically they should be protected from the car. But it made economic sense and, in any case, the law was changed to reflect the emerging reality.
Of course, I am not suggesting PLT is as important as the car but it is quite clearly vastly more useful in terms of both public uptake and economic driver than using the spectrum for amateur radio hams. It is not morally right and hams can rightly feel aggrieved but we are (moving toward) a post-Christian society where economic reality sometimes comes ahead of moral "correctness".
(and please don't start with the "what about the military?" argument. If it was truly interfering with military use it would have been stopped in it's tracks)