My first question is: Do you exceed your data cap? My guess is that you don't. If you are suddenly faced with a $100 higher bill because you exceeded your cap you'd think differently I suspect. I also suspect that a substantial part of your income isn't eaten up by internet costs. If you were breaking your cap and feeling it I think you'd understand the frustration.
I don't torrent or download anything. 30 year old me did but these days I find it easier to just consume less legal media so that I can afford it rather than risk fattening up on the arguably illegal media. Yet, I am still rubbing against the cap because I back up to the cloud in various ways. It's not a lot of money but it's annoying because I don't trust them enough to set up auto pay. $60/month? Fine. $60-$160 per month. Also fine but I'm not comfortable with auto pay because that's the utility account and I don't keep that much cash in there. Now I have to either put more cash in there (fine but annoying) and keep a closer eye on it OR manually pay each month.
It really comes down to two issues for me:
Just to circle back..
I think part of it is also what percent of your income is eaten up by internet costs. If 10% of your disposable income is eaten up by internet costs you really feel it when it is 20% suddenly. If you have $500 of disposable income and you spend $50 on internet that suddenly doubles. That hurts. Scaling up, if you have $5000 of disposable income imagine if your internet was suddenly $1000. You'd crap. That's what it feels like to folks who are managing a tighter budget. I can absorb the fluctuations. It's not a monetary issue for me but it is to so many others and it's legitimate to be upset.