Because this happens when unlimited plans are used outside they way they were intended:
As Canada's telecom regulator considers demands for unlimited wireless data plans, the two largest U.S. carriers are clawing back the freedom
www.google.ca
In short, the carriers take away the perk or dump “fair usage policies” on everyone as a result that place harder limits on how that perk can or can’t be used.
Or they might just decide to castrate the speed even worse to the point where, yeah, you have data still with no overages, but don’t try to do anything aside from check your email with it because it’ll be painfully slow.
So, everyone gets punished for the indiscretions of the few.
With Freedom being one (if not THE) only carrier in Canada who doesn’t charge data overages is something big to be appreciated. I use the feature often because I too may go a gig or so over my monthly allotment on a semi regular basis. But not tens or hundreds over.
And before you say “Yeah, that won’t happen” go read that story I linked to if you didn’t already. It’s happened lots of times, and even though I see unlimited plans creeping into the market again in the USA, I fully expect to see it happen again.
I’m not a cellphone company apologist by any stretch of the imagination, but I also understand the tech enough to know that at the current state of the cellular infrastructure, bandwidth is still a finite resource. One person abusing it effects everyone else, and the carriers get angry phone calls about it, and when they get enough angry customers that start cancelling because of it, they eventually start doing things to solve what’s causing their issue to begin with.
5G will change the playing field dramatically when it arrives, but that’s still quite some time out, and even the carriers will almost undoubtedly try to make a cash cow out of it for the first 5-10 years even when the bandwidth is exponentially expanded.