Can you walk me through how it ends in anything other than Gates having given his money away through the Gates foundation? Also, for what it's worth (and I don't think this is even essential to the point), the Gates Foundation has an explicit mandate to spend down all reserves within 20 years of their death:
> Also announced was the decision to spend all of the foundation's resources within 50 years after Bill's and Melinda's deaths.[177][178][179][180] This was later lowered to within 20 years of their death.[181][182] This would close the Bill & Melinda Gates Foundation Trust and effectively end the Bill & Melinda Gates Foundation
(source https://en.wikipedia.org/wiki/Bill_%26_Melinda_Gates_Foundat...)