Deciding to set a "success" target of 100 million players and then spending upwards of $400 million USD developing one title is a recipe for studio closures and/or layoffs when it inevitably "fails" because executive leadership didn't set reasonable targets or come up with a reasonable budget. It's a big house of cards.
A more diversified portfolio of titles with more reasonable budgets would be a much safer choice, and it's how things were done successfully in the past.