Only those which don't participate - those who offer their advice and wares on these and other fora are still in existence.
We live in an ever changing World... like it, or lump it, we adapt or we go under. The James Hargreavesesque "Internet-sales-Jenny" of a decade ago (yes it really has been that long now!) has become a fully fledged "Internet-revolution".
The World was a sadder place the day Thos. Turners in Reading was bought out and shut down by Sportfish and that's a now a decade or so ago. Is it the internet fora or the 'multinational tackle dealer' that runs them that's to blame?
In reality, it's neither. Turners went because the owner got a business offer and accepted it and those tackle shops which haven't diversified into online and mail order sales will either be labours of love, or will seriously struggle to make ends meet before long, or I'm very much mistaken.
It's been called 'progress' for centuries... frequently people don't like it, but that never seems to make any difference
Cheers,