Haha, yes. Glad you said this.
I don't know the exact requirement on FAA approving a new airplane / VTOL whatever, but I do know it takes a lot of time... Same reason I thought the supersonic company was a bit ambitious on their timeframe as well.
Dassault's Falcon 6X (largely derived off the 5X that was cancelled due to design issues from the engine supplier Safran) was only just announced and isn't scheduled to go on sale until 2022, and a good portion of its design work has already been completed.