A nice 12 person yacht on the Mediterranean is 400k eur for 2 weeks (with staff) so I'd realize it's not enough and invest the rest so I could get comfy.
Along the way help friends and family, pay off mortgages, usually good stuff.
It's not that hard to spend 4% a year of that.
Help family? Sure, although you don't need that much money for that. Friends? Ehh not very smart, just think about the changes in the friendships' authenticity.
Private chef, absolutely. Like some people rot away managing Linux as a desktop or putting together 3D printers instead of buying one that works and using a Mac, I enjoy food.
If anything less than $1B isn't enough then it is never enough. $1B is the new $100M thanks to ongoing currency debasement.
Also, there is something called "taxes" which is what makes anyone who has millions or billions to want even more money and the IRS will still come after you anywhere in the world.
Otherwise they have to renounce their citizenship and move to a tax haven.
Tax wise at this level there are very tax efficient vehicles available.
Time is more valuable than money and unless you have tons of time and space that simulator is just an expensive paperweight.
Wishing for 1B is completely nonsensical if you understand what kind of money that is.
