And by not everyone you can very well mean Youtube itself. I'm in Hungary, sometimes I watch gameplay videos that are only enjoyable in at least 720p and Youtube can't keep up with the bandwidth. I have a 1 gbit connection. And Youtube won't buffer the whole video if you pause it. youtube-dl is really a must in this situation.
I'm not familiar with the situation in hungary but isn't it more likely that your ISP is throttling or otherwise artificially limiting the connection to Youtube, Netflix and other services with bandwith-heavy content.
Well, they don't throttle torrent in any noticeable way (torrenting with 10-20 MB/s or even more is not uncommon). And torrenting is pretty active in Hungary. They also provide ipv6 addresses too, I really can't say anything bad about my ISP. But it could very well be them who do the throttling to Youtube, I can't any way verify that.
