Why aren't realtors investing?

[DuBeaux Dingle]

Hey BP,

I'm relatively new as a real estate agent, but one of my main goals are to become a successful investor, focusing on building a portfolio of rental properties (hard to find cash-flowing properties in the Northern Virginia area btw, from what I've seen) 

As I haven't "made it" yet as an agent, it's crazy to see that the agents who are making good money, aren't investing themselves, with all the resources and tools they have at their disposal.  

Why is that? I feel like it's especially needed when you have a commission-based job