Having everything is a concept related to happiness. It is the exact moment when all needs are satisfied, you need nothing and you reach happiness.

Reality is you never get completely satisfied, even if you have all the money you can spend, all the power you can control and you have all the territories you can manage, you always will want more. That’s human ambition.💰

So, I think having everything possible or imaginable is not possible but, if it could be possible, our nature will demand even more and more. Making us frustrated, unhappy and empty. Looking for the Holy Grail is a bad idea that always dooms the people who follow that path.