The system that is suspected (and again I feel it's jumping to conclusions to list anything at this point) is actually a stall avoidance system that is independent of the autopilot and is on all the time. It pushes the nose of the aircraft down when it detects a high angle of attack which could result in an incipient stall. If this happened close to the ground and the crew wasn't paying attention I suppose it could cause this type of mishap. I don't know any pilots that aren't closely monitoring controls even if they are on autopilot at that phase of flight, and both that system and any autopilot system allows the pilot to "fly through" the controls, so it's not like the autopilot can just take over and the pilots have to "wrestle" (a term I've read more than once) controls away in some superhuman feat of strength. It is possible and indeed far more probable that the way the system works in some phases of flight has not been conveyed adequately to pilots, training failures are common in mishap investigation, far more common than mechanical failures. It's also possible that an instrument failed that led them to take the opposite action they should have, like Air France Flight 447 (and lots of others). Being new to an air frame, as all pilots by definition are with the Max, plus inadequate training and simulators, are all danger points. If I were to speculate, and it would be sheer speculation at this point, it would be that this is a combination training and pilot error issue which won't be clearly anyone's fault and by the time we've determined that it will all be a somewhat muddled memory anyway. The reputation risk is the piece you have to determine to decide if the stock is oversold or not. Will Southwest stop flying the 737, given that a single fleet is integral to their entire business model? Probably not. Will anyone start buying A-380s again instead of 777s because of this? Not likely. Will some companies end up canceling Max orders in favor of A-320s? Sure, but there's only so many Airbus can tool up to make in the short term so if you need a 737 type aircraft you may end up with them anyway, and in 3 years when Airbus is at max production this will be something that mostly only aviation buffs and pilots remember. I could very well be wrong on the impact on reputation, but I don't think I'm wrong on focusing on that as the only real moving part in this equation.