Re: "The more you tighten your grasp, the more systems will slip through your fingers."
Yep they are definitely serious.
We are on Sky Fibre unlimited in the UK - no usage caps or traffic management. I can download at full speed 24/7 for a month with no drop in service if I needed to.
Check: http://www.sky.com/shop/terms-conditions/broadband/network-management-policy/ and scroll to the section for "Sky Broadband Unlimited, Sky Broadband Unlimited Pro, Sky Fibre Unlimited,
Sky Fibre Max, Sky Fibre Unlimited Pro, Sky Ultra Fibre Optic products*"
The only listed drop in service is for external network issues or faults.
It's not even expensive really.