[This response was prompted by the picture of the original Perry Mason. Somehow I went back in time to a former life!]
Somewhere in Section 121 of the Federal Aviation Regulations (or a companion statute) is a provision that requires a "121 carrier" (or a carrier certificated pursuant to Section 121 of the FARs; or a large commercial carrier; or a major U.S. airline) to maintain minimum levels of liability insurance for the benefit of both passengers and third parties (innocent victims on the ground). (Passengers may be innocent victims also, but you decide....they could have taken the train.) So, an airline needs to maintain (1) at least $300,000 per passenger seat (minimum $20 million per aircraft of 30+ seats), and (2) 3rd party liability of $2 million to $300 million depending on MTOW of the insured aircraft.
Additionally, Boeing carries product liability insurance primarily for design and manufacturing defects. In an aircraft purchase contract the manufacturer (Boeing) will require the purchaser to insure the operation of the aircraft (liability insurance, like what is required by law) and name the manufacturer (Boeing) as an "additional insured" under the insurance policy. I was an airline representative and would always get a "carve out" for incidents or events caused by the gross negligence or willful misconduct of the manufacturer (one can never be too careful).
Also, with respect to the insurance coverage between insurer and insured, if the insured was grossly negligent or engages in willful misconduct, the insurer can attempt to recoup all monies paid out under the insurance policy from the insured. Boeing's product liability insurance is also at risk if there was gross negligence or willful misconduct.
The squeeze of potential gross negligence or willful misconduct by Boeing is why Boeing may have some BIG $$$ EXPOSURE for the recent spate (last 10 years ??) of accidents. Bottom line is that Boeing and its insurance companies and the airline insurance companies will be battling / litigating for a long time (years and years) and most likely all will feel some sting of $$$ lost. No where near the cost some have paid for the corners that were cut in building some of these aircraft. You will likely never hear how Boeing, the insurers and air carriers settled the issues.
(Unlike the "new" aircraft accidents, the failure of the McDonnell Douglas (UPS MD-11) (note to self....this aircraft was not designed by Boeing) engine pylon / pylon wing attach point will not be a Boeing responsibility because it is likely a maintenance issue which is the carrier's responsibility or is contracted to a 3rd party (in this case a repair shop in Texas). The event is eerily similar to a 1979 DC-10 crash in Chicago.)