Disclaimer: I don't know anything about anything. Some parents can put 850k in a account for their child when it's born that gets invested, say in the American economy (grows by say 7% over an average, long time period), which compounds until later in life, and when they grow up, they can access it. With good financial responsibility, this child won't have to work a day in their lives and can live off the returns. Wh…
What investments should be used in the account exactly?
What do you do about the temptation of the administrators to "borrow" from the reserves, direct the investments to benefit themselves, hoard extra resources or underfund the plan by estimating the future revenues or expenses a bit too high or low?
Your idea isn't bad exactly, just complicated by these extra provisions such as "the basic income shall be derived from investment proceeds from individual accounts."