I'm assuming more purchase options will be added in coming updates - now it's incredibly easy to meet the achievements. Having to click the icon hundreds of times is getting tedious, and the limited number of options means that each time I reset the Angel Investors I lose interest. Think of it as negative marginal utility.
Maybe there could be some kind of 'second stage' to move on to after you've finished capitalising Earth.
Because the Devs are outta their skulls!