https://productforums.google.com/forum/#!topic/youtube/CPW7r...
http://lifehacker.com/use-a-vpn-to-bypass-your-isps-throttli...
You can search for more. While it could be a coincidence that somehow after switching poviders Youtube fixed their servers at the same time and got faster, I'd have to believe it was because of Verizon.
Someone from a Verizon forum remember mentioned, defending them, it could have been Google not paying for peering with Verizon enough. But I consider that still Verizon's fault. I don't really care about the details, I was paying a hefty sum to Verizon for Internet connectivity and not getting it. However they setup their peering agreements is their problem, I pay to not have to know that.
Comcast I know went through and systematically shut down private interchanges with major content providers and also refused to upgrade public peering points. There were some peering points that we're seeing 10%+ packet loss. The result was terrible performance to any provider who didn't buy "internet access" from Comcast even when the only access that was needed was to Comcast's own customers.
A friend worked as a peering coordinator for a major content provider at the time and nobody had ever asked to be paid to deliver content to their own customers before. This created a standoff and I'm not sure how it ended but I believe the content providers caved.
Of course I'm pretty sure this is what was the spurred Google Fiber. One thing that Google seems really good at is to ensure that nobody can use their monopoly position to cut them off from the customer (Android, Chrome, Fiber).
http://insidertestprep.com/wp-content/uploads/2013/05/Vertic...
The money should flow from the carrier to the content providers, but they saw them initially as a nuisance and later as leechers, despite that they are essentially the product that the carriers are selling and getting paid for in the first place, and they are getting it for free.
Not me. They got us a FIOS deal when we got our house. I used them for 2 years. Super fiber speed, except they would throttle youtube. So here I was paying to this supposedly superior quality and speed and getting throttled by them. So I dropped them and switched to a plain old cable provider (just for internet, we don't really watch tv anymore). Cut my costs more than half. On paper the speed is lower, however, the latency and lack of throttling for things like Youtube and other media is better.
Now since Verizon installed their equipment on our premises, they keep coming back every few months, in person -- as in they have someone drive out to our door, begging us to come back. They even offered to match the price we pay for cable currently (but it is always some stupid 2 year contract thing, that I know will go throught the roof when the time is passed).