What FREE service
That's in reference to Netflix OpenConnect.
Verizon promised us 50MBPS connection to the INTERNET
I agree ISP marketing should be more explicit. But i'm sure ISPs for simplicity market packages as Internet service. You don't get 50Mbps to the Internet. You get 50Mbps to Verizon. Verizon is just but one of many networks.
not just to a speedtest site
I see, well the Internet makes no sense without companies like Level3 and CenturyLink. These aren't just "some random speed tests".
They don't deliver 3MBPS with netflix
Who doesn't deliver? Verizon? Netflix?
since I can get that speed using a VPN, is obviously Verizon's fault
Not quite. Okay so you have a good VPN. Well perhaps that VPN is on Netflix OpenConnect. You've rerouted around some congestion