ISPs are media companies. They do not want regular people publishing content or having a voice unless they can get their commission.
The world would not have become just 5 websites with identical content if everybody had a server at their house.
I believe this to be true because in the usa they really are media companies, aka Comcast, and I don't have this problem in other countries where I lived where ISPs were ISPs and nothing else. They delivered internet and maybe also phone.
In Taiwan I get 1gbps down, no caps, and a bunch of weird networky config stuff I don't quite understand but apparently you don't get in the usa, for like 30 usd/month. It's awesome.
Plus I'm torrenting basically 24/7 and my isp just doesn't give a fuck. When I did that in the usa Comcast sent me an email for every single torrent lol. My download is in the tens of terabytes a month and uploads are at least a terabyte a month. ISP doesn't care. Love it.