Business is business, and that's it.

Do make up your mind! First it's business has no place in education, then business is business when it comes to your salary!

Education is never free, Turnoi. Somebody has to pay your salary, be that by charging tuition fees (as is normal for most private schools and universities everywhere in the world) or it is provided by the tax payers of the country. Either way, education costs as you alluded to when you said:

had spent his own money on study.

Your idea of free education for all is lovely but unrealistic, as unless you are going to work for free, whilst presumably living rough and eating from rubbish bins, you will want a salary and someone will have to pay you.

You really don't have a clue. You're like an idealistic teenager rallying against cosmetic testing on animals whilst wearing lipstick! Clueless!