It's definitely another inflection point. The Falcon 9 is 75% reusable by cost of components, the Falcon Heavy is 90% reusable. And it's capable of much, much more. That might open up the heavy lift launch market to a whole new gaggle of players and begin really expanding out what is done there. It'll certainly put a lot more missions on the table that weren't there before, like low cost outer planets space science probes.

Also, something nobody has talked about yet. Falcon Heavy is capable of something no other US rocket is really able to do yet, launch new space station modules (or new space stations period).