But to be fair the F9heavy doesn't exist yet. And likely won't for 3-5 years.
They have the Falcon 1e to build test and improve. And they will likely be producing a F9e as well. In addition they are going to be working on recovery of the 1st stage, and looking into 2nd stage recovery. Plus they will be working on getting man rated and the upgrades to the Dragon required to do that. So they do have a lot on their plates at this time. That said, I hope to see a Falcon super-heavy by 2020!