Can one have it all?
Depends on how you define "all." Some who have lived happy and full lives, yet of moderate means, might say "yes," while others looking from the outside would shout, "No!"
While others looking from the outside at the extremely wealthy think the extremely wealthy have it all.
The fact of the matter is, one has to define "all." Is it a lifetime of wealth and love and family and happiness and education? Or does it have other qualities in addition to those?
Before one can answer the question, it has to be defined IMHO.