There's more to going to uni though than the basic cost of tuition. Consider the time spent in education, compared to the extra years children could spend working on the smallholding. In effect, that is costing the parents the 2 years labour during sixth form, and three or four whilst their offspring is at Uni, not to mention travel to get the child to a 'good' local school, if you're lucky enough to have one, and providing some living expenses while at Uni, plus travel there and accommodation. Sure, there are giant bank loans which are to be paid off eventually - but the thought of having that hanging over your head for years is definitely enough to put off many prospective students.
There's also the possible understanding/assumption that the offspring will continue to work on the smallholding, so wanting a further education may require some feelings of letting down ones parents, which can be a strong influence.
Had I stayed at the village school or the convent I attended until I was 10, then I would not have gone to Uni. Had I not gone to Uni I would not have obtained my degree in nursing. Had I not nursed at that level and with that degree of scientific and research based knowledge, then I would not have helped to further nursing knowledge so we can all deliver the best care. There is nothing at all involved in that which would make me a selfish, money grabbing individual with no understanding of many walks of life - nor one who wants to rule the world, for my own power or not.
Do I detect a whole load of prejudice in some of the replies? Sure, some folk who went to Eton or Harrow, Oxford or Cambridge, will be yahs living like leaches on the rest of us, out only for themselves. There will also be many uneducated people who live the stereotypical idle life on the dole. However, there are also many ex pupils of Eton and Harrow who have given their lives in service to this country, many who hold top jobs as research scientists, a few philanthropists, and many people who simply live a normal, hard working life. There are also uneducated people who are highly intelligent, and also give their lives for their country, or serve the wider population in medicine, research, government and so on. Sweeping statements are as distasteful in one direction as in the other.
For myself, I do have children and we chose to give them the best education we could before we took up smallholding, and what they did with that was their choice. I hope they considered their children's future when they made that choice - in fact I know they did.