Depends what they want to bankroll. Sure, it is enough to be sitting on a beach for generations, but they might be looking at sending robots to fetch asteroids,

Depends what they want to bankroll. Sure, it is enough to be sitting on a beach for generations, but they might be looking at sending robots to fetch asteroids, or something equally outlandish. Then betting on an extra few billion might make a lot of sense. Also, there is the possibility that shouldn't be discounted when people refuse to sell, which is that they actually have a plan and want to try and execute it.