There's a fair chance MH370 was taken by a rebel and MH17 was downed by rebels, the first action deliberate, demonstrating great competence; the second by accident, showing none.
I seriously question the ability of the authorities to predict or prevent these rare and random occurrences, or mitigate the risk at reasonable cost.
It all stems from governments. The Malaysian rulers antagonised opponents, jailing one for "sodomy". Some Ukrainians ousted their democratically elected government, possibly with help from the CIA, and a civil war ensued.
The loss of life in illegal or unnecessary wars waged by Baby Bush and Big Blair, was "democratic". This is "evil" and "criminal". Simple but no help.