With the billions he has, not a problem if he actually tried.
When he dies, I while track the titles of news articles about the inheritance fight with mild amusement. I won't read the articles however...
He's having kids only to satisfy his eugenist, white supremacist kink. He doesn't care about them and even hate them if they stray out of his worldview - just ask Vivian.
Nothing wrong with wishing your own kind to continue.
That's why he is using one of his own kids as a human shield.