The F117 is an inherently unstable aircraft, which is why it's also maneuverable. Passenger planes are designed to be dynamically and statically stable, they're

The F117 is an inherently unstable aircraft, which is why it's also maneuverable. Passenger planes are designed to be dynamically and statically stable, they're harder to stall, easier to recover from a stall, are not prone to stall spins, etc. Whether the main wing or the horizontal stabilizer stalls first, the plane is recoverable (including with a failed powerplant). That's not a given with other designs. As soon as you go with a candard design, you have to ensure the canard always stalls first or you've got an unrecoverability problem. Existing designs are less complex is what it comes down to.