The company plans to continue production as long as costs from lawsuits are predictable enough to meet with price increases. Product quality displayed a slight negative correlation with court and settlement costs. Essentially, quality was as high as anyone could make it. It gradually improved over the years, including the years that manufacturers liability costs shot up. Public health authorities are now arranging to buy vaccine from foreign sources when domestic is no longer available.
Foreign labs can equal quality of domestic manufacturers.
They can't do any better. Sometimes they do worse. But the alternative is no vaccine at all. Drug manufacturers RISK getting sued. We all RISK a public health disaster.