I have some sympathy for British manufacturers, who design and build in this country, but too many big name brands have gone to the Far East, to get gear made while keeping the high price. Its also an environmental, human rights and other concern, the cargo ship coming all the way from China, the fuel to bring it that way, the risk of your container being one of four to fall into the sea every day.
The child workers in the factories in China, at minimal wage, tuppence a day.
I could quite happily see a couple of brand names slip from the tackle market!
Some factories 'sell to the highest bidder'. One factory may make tackle for Fox, Nash, JRC etc.
The brand that pays most gets their bedchairs before the next payer gets theirs. It is why sometimes there can be a shortage, as well as brands purposely holding gear back to create interest.
You have as Yonny says, tackle brand owners making big profits in their own pocket yet not wanting to put money into R&D. Updated tackle, some of the new advances in tackle is a step backwards, some original gear is brilliant, yet newer models are frankly awful.
I have a TFG oval brolly, I think it was £80, yet why should the same thing from Fox or Nash cost £200?
Why should a Fox bedchair cost £300, when exactly the same from JRC is £150?
The items are essentially the same, in some cases just a different badge!
Carp tax, fishing line is fishing line, sea line is the same as fishing line, (example) yet the Fox, Korda brand is £20, compared to £9.99 for Sea fishing line. It is the same stuff!