To most IT departments, the internet is like a big, messy, dirty, dangerous playground to which they hold the keys. It's not necessary for anyone to go there, ever, and if the gate is blocked (or broken or on fire), there's no hurry to fix it. It's just an unnecessary playground, after all.
To a programmer, the internet is the library where we keep all of our reference materials, and the IT department is the unnecessary bouncer at the library door, sometimes preventing us from getting in, and sometimes refusing to clear the door when it's blocked. Also, quite often, the internet is how we contact and maintain the services for which we are responsible. If we can't get in there, we literally cannot do our jobs, either partly or completely. So when the IT department treats internet access as an optional extra to the office and a low priority to fix, we can get a bit upset, but to them it probably sounds like we're crying because we can't get to Facebook.
Mokalus of Borg
PS - Thankfully, this doesn't happen too often to us.
PPS - But it still does happen.