They just love being in powerful positions. Think about it like this: there has to be some superiority complex. These political leaders or billionaires, whoever they may be, have accomplished things and now think they can do anything or find ways to do it.
His leadership looks like he wants to check all the boxes. His political views resonate with many people, so there is no problem for him things like receiving Nobel Prizes and annexing land.
He is appealing to the history books.
What could a person near his end be motivated for other than that.