Because suing customers is sure to improve things!
That's definitely the path to greater cooperation and goodness.
Do you really believe any of these companies would sign that instead of going with whatever plan b is?
If so, I guess n-gate is right.
But let's follow this silly thread anyway. On average, the lawsuit would take three to seven years to resolve.
Assume they win: great, they get some small amount of damages and everyone stops using Android. They can't and won't ever get the remedy of forcing security updates. It's not even something available.
Assume they lose: great, they get nothing and everyone stops using Android.