I wrote most of my MBA papers on Walmart. They publish all their corporate data, whereas most companies do not. At the time, around 2006, I read they were being sued some 500 times per day worldwide. They had more lawyers on staff than the next ten companies combined. Their general response at the time was to fight every lawsuit to the hilt.
If they had a, say, $5000 payout to settle nuisance suits, like many companies do, then they would see thousands of lawsuits per day. I suspect that they manage to run the opposing side into high bills or unpaid time so much that most suits get dropped. That is how I won a lawsuit. I bankrupted the other party. (Or, rather their law firm sucked them dry, as my lawyer said they would.)
This case is a bullshit case. The families only see a wealthy company and the chance of getting money to ease their grief.
Those petty claims, 500 per day, would wear down most businesses but the healthy, wealthy business should kick those claims to the curb easily. Still, the result is the cost of the attorneys is included in the price we pay for the merchandise.