I can already hear the lies and cover ups when commercial airplanes start falling out of the sky.
A dirty little secret is that MANPADS aren't particularly effective against commercial airliners; the warheads are too small. The majority of commercial airliners that have been hit with them have survived (and they have mostly been smaller aircraft in Africa.)
You mostly take out one engine and commercial airliners are designed to survive the loss of one engine.
Actually they're not particularly effective against anything other than helicopters.