We already massively subsidize rural living costs, stop that and the free market would raise wages to compensate without the need for government intervention.
Subsidized, farms, roads, healthcare, telecoms, deliveries, airports, etc etc it’s just wasteful.
The truth is that the free market optimises for maximised ROI to the exclusion of all else.
There used to be a lot of smaller retailers serving communities - smaller markets, corner stores, delis, etc. Large retailers came in and set up super stores which offered comparable goods at lower prices (due to the larger purchasing power and ability to take a local loss subsidised by other areas).
Once the local retailers were run out of business - the business eventually looked at what stores wern't turning enough profit and shut them down. After all, there's no local competition - customers will be required to go further.
This lead to lots of local unemployment and communities in which it's impossible to get food and other necessities locally.
In a free market, wages only rise where the business doesn't have control over the market. Once they do (through consolidation and driving out competitors) - wages drop, positions disappear, and conditions degrade.
If you want root causes, I would propose it’s a combination of subsidies on other foods combined with the reduced taste of modern fruits and vegetables.
You are the recipient of govt subsidies. We are a society and as such, some things are more valuable than people are willing to pay for them, but yet still essential to keeping society functioning.
Why do these have to be a one or the other?
It's like the argument of "Why are we doing stuff in space while we still have poor people".
As a society we're capable of solving multiple problems simultaneously.
Many farmers are going out of business because of major corporations driving out independent farmers.
There's huge numbers of farmers that are being required to undertake terrible short-sighted practices because that's what they're contractually required to do for $BrandName to buy their product.
As for 'not exactly poor' - no, they're the modern working class, for the most part. They're asset rich, but free cashflow low, and operate in conditions that are highly unpredictable, and much of their ability to turn a profit is based entirely on things out of their control. They depend on huge amounts of credit to buy the machinery and resources they need to operate.
Subsidies rarely help people in the long term because the markets adapt. Increase corn production and prices drop to match, but now you need to dump all that food on the market. Worse this is directly resulting in increased obesity and related health issues.
There is plenty of food and money to go around, but the complexities of getting it there, navigating the politics, culture and myriad of other issues are the real barriers.
Which is why it is so short sighted to think we should only spend money on the most pressing issue first, until it is solved.