"taking into consideration the added complexity of design, installing and maintaining an emergency parachute system for a typical passenger jet, the amount of revenue lost by carrying at least 40-45 fewer passengers to compensate for installing such a heavy system, and the extremely unlikelihood such a recovery ever would be required, I can't see trying to scale up a parachute recovery capability for airliner use."
https://www.quora.com/Why-dont-airplanes-have-giant-parachut...
Parachutes increase the cost of ownership, as they have to be replaced every 10 years or so.
A lot of the people buying Cirrus airplanes are taking off into marginal weather and just assume the parachute will save them when their luck runs out.
None! But it could potentially have prevented a lot of the fatalities.