All the armchair pilots giving it large, they should have done this or that or the other are talking crap.
This whole thing was about money and how to spend as little as possible.
Boeing producing an aircraft not fit or safe to fly without extra added systems to correct the inherent pitch instability.
Boeing for not telling about or training the pilots what MCAS was or did and how to defeat it.
Boeing for not designing any redundancy into the system or cross checking with other systems.
Boeing for not testing the system and/or the software that controlled it properly or extensively enough to cover all eventualities
Boeing for not having a bloody OFF switch that allowed the pilots to fly the plane when all else fails.
FAA for being complicit in allowing Boeing to self certify an aircraft (WTF ?)
US Government for being complicit in allowing FAA and Boeing to act that way.
All these organisations should be completely ashamed of themselves, there was nothing wrong with the aircraft at all, but the computers didn't allow the pilots to fly it.
I hope Boeing, gets the arse sued out of it, by everybody, they deserve it.
Now for all those clever dicks on here who think the pilots should have done this or that or the other. I reckon from reports, the plane was around 9000 ft AMSL which is about 1342 ft AGL. In that time an object in free fall will take about 9 seconds to hit the ground. So before you finished reading the third line of this post you would be dead. Good luck in fixing a problem in a system you were not trained on or even told about.