Wish I could downvote this for fake info, but I'm too new.
Distributors make a pittance for a relatively risky bet on delivering fruit and veggies. Margins are usually below 10%, often close to 5%, and definitely nowhere near 30%. On top of that, there's the added risk of damage happening to the goods in transit and storage, voiding the entire profit. Google and Apple make money by sitting on their asses and taking a slice off a developer's cheque, which is more akin to a usurious mafia slumlord rather than a tech company. Small farmers are on the short end of a stick, but only because by nature small landholdings are not profitable, and farming is a scale operation for production of a commoditized good by nature. App development is not a scale operation - a developer can be easily profitable with a small group of high-paying customers.