Unfortunately, Graham, the fishing rights then become more valuable to the riparian owner, as game anglers generally seem to be from the wealthier sectors of society, and therefore more able to afford elevated rents - and so clubs and/or syndicates which currently rent (primarily coarse) fishing on these waters may find that they are subjected to sharp increases in rent from the owner. They may then lose the fishing because they cannot afford that increased rent.
I do appreciate that my comments do not apply to all riparian owners, nor indeed to all game anglers.
And don't think that I am against the EA initiative in this case - but the fact remains that people will be willing to pay more for salmon fishing, and the coarse angler may well lose out.