The argument seems to be based on the fact that he worked on the foundation for the company, and his subsequent success, during their marriage and she contributed by enduring hardship and raising their child in that time, so its not like a lottery win.
Regarding the lottery win though, if a settlement figure for children and for raising them should have, in fairness, been higher but the spouse who should pay has no money then there is also an argument that if that spouse later comes into money by any means, then the inequality of settlement should be righted.