So, instead of using those resources to attempt a takeover of Australia, invest in index funds. Then, withdraw 4% a year, which can be used to take over, say, small towns in New Zealand, one at a time. Remember, the goal is longterm sustainability.

Graph: How good a superhero movie is / Realism

Remember, you cannot write off a lair unless it is entirely used for villanous purposes.

You also want a portfolio of evil deeds, in case some turn out to be ineffective.