You are perfectly entitled to believe that you have the answer, the "real" answer, David49.
However, in just the same way, I believe the farmers have been constantly let down, particular in the 1960's when the protection they had for on-sale prices was destroyed. This was not all bad. It was felt it would lead to cheaper food and, with the growth of supermarkets it did although the concentration on highly processed food also started about this time.
I'm sure similar attacks could be shown to have been done by Conservatives earlier than this but the trait we always see is that Conservatives are swift to destroy - in this instance farmers, particularly small farmers (on whose work, I would say, this country was built) were going out of business all around country areas. The Conservatives happily applauded the growth of industrialised farming but did next to nothing for those whose livelihood they destroyed - not just the farmers but hundreds of small shops too.
The 'right-wing's' chant is always "go big or go home" and yet this country has been built on the middle-class, the middle-income workers, they give people a credible goal to aspire to, they care about low-income workers often building SMEs that are the largest employer in an area and they are the part of the economy that grows new, innovative businesses, many started after a full day's work, in a shed, a garage or a kitchen.
Strangely, this middle-income group have often look to the Tories and there have been some right-of-centre Tories, old-fashioned Tories (?) who have stood up for this group - but where are they now ... buried under an avalanche of the increasingly further right!