So you are happy to use your wealth to give your children the privilege of extra curricular activities, enriching activities like holidays, their own books, and nutritious meals.
And you are happy to use your personal strengths to give them the privilege of a stable family home with interested parents, support with their education, advising them on personal development and career options, and a well supported childhood where they have access to public services like medical care?
None of which are available to all children. Neither the family strengths nor the paid-for privileges.
But somehow you think that's different from the privilege of education. Which I absolutely consider to be part of fulfilling our duty as parents.
Actually, supporting homework and providing books passes your test, but not paid-for academic teaching. Or paid-for sports teaching... when it's in the same building. But it's OK if the paid-for sports teaching is provided by different teachers. And it's maybe OK to have some paid for academic teaching, so long as it's outside school hours and there isn't too much of it (tutoring).
I don't see that as a consistent position on your part.