

In the UK, where I believe VDSL and G.Fast both are achieved by putting the equipment in your local “green cabinet” which is the sub distribution between you and your local telephone exchange.
My cabinet is about a 200m straight line from my house, so I was lucky enough that I always got pretty close to whatever speed the telco was selling me.
My parents’ place is about 500m or so from theirs and I think they typically got about 70-80% of the “up to” rate on VDSL before they switched to fibre. It used to be more like 50% on regular ADSL/2/2+
I think you have to be kinda rural before you’re much further than that from a green cabinet (which of course isn’t an insignificant number of people, but I believe per capita it’s not typical)












Frankly no, don’t even take advice directly from research universities unless you’re a qualified doctor or have cleared it with one. Just because a paper is written in the same language you speak, does not guarantee you will understand it completely, and you may not even realise you’re missing something important.
Your doctor will be able to tell you what is right for your body, a random medical researcher has no idea you even exist. Everyone is different and there are plenty of changes to your lifestyle you can make that could cause problems if they’re not right for you.