Truly amazing things take a while to do. I think most people will attest to doing a bunch of experiments to test the waters before they dip into doing something crazy and hard for the long run.

Even that simple example of buying the diner so they add hash browns to the menu is a good example of that. Buying a building, not to mention one already occupied, is not exactly a 5 minute transaction. I think it just comes down to the fact that rich people tend to understand the relationships between time, money and potential returns.