Internet in Germany is abysmal, and not only in the countryside.
I live in Berlin, our capital. I can't work from my studio since internet is too slow there. I know whole companies having moved their offices to different districts because they did not get sufficient internet. At the place I am currently at, I have LTE and officially it's listed to be in the highest category in terms of speed: I have about 1 mbit/s download. Some base station seems to be broke, but that is the case for months, and I would not even know where to complain about this. I’m actually only writing this while waiting for my software to update, so I can finally start doing something. And again, this is central Berlin, not somewhere remote.
For the "why?": in 2013 our chancellor Merkel said (on the NSA scandal) "Das Internet ist für uns alle Neuland." which translates to "The internet is unchartered territories for all of us." – in 2013! As far as I know, they only have Wifi in the Bundestag (the parliament) for like two or three years, and I would not be surprised, if most of our politicians still read their emails printed out on paper.
Seriously, it is that bad. Germany is in the stone age in this regard.
It's bad, but it's not universally bad. I'm in Berlin and have 400MB/S at home But our apartment was built in 2011, so that might have something to do with it.