Who's afraid of for-profit education? Those who work in non-profit or government owned and operated schools. Many parents and other stakeholders have been made fearful by this education establishment.
What's more important to humans: nutrition or education? Nutrition is more important because it is the prerequisite for other human activities, including education.
What organizations provide food and who pays for the food? Food is provided by for-profit farmers, for-profit processors, for-profit wholesalers, and for-profit retailers. Most food is purchased with the consumers' own money, but a significant amount is purchased by low-income individuals using food stamps.
Why can't education be provided similarly using education stamps? We trust for-profit enterprises to provide our food. Why can't we trust for-profit enterprises to provide K-12 education? Fearmongers have frightened us and made us into gullible compliant socialists who despise commercial activities in education. Go to the supermarket and ponder its marvelous array of foods and then contemplate how a for-profit K-12 education sector would please and amaze its customers.