Absolutely. For the cost is irrelevant executive that simply has to get between NY and DC, there are plenty of bizjets flying every weekday. I have seen plenty of corporate Falcon 2000s and G450s flying the Northeast Corridor with one or two passengers onboard.

But the absolute requirement for privacy and security is why a charter-by-the-seat/shared shuttle model would never work for that type of traveler.

For the potential charter by the seat customer who is price-sensitive and doesn't need absolute privacy, flying private between NY and DC is massively expensive and likely slower door-to-door than just taking Amtrak.