I resigned in protest at the original crime. I didn't follow the subsequent events. That the typical decades long length of lawsuits were almost certainly a factor is just logical.
The settlement just shows how egregious the crime really was. As it happens the then CEO Larry Ellison retired before I had left. So he got his reward and left the cleanup to his successor. Who must have decided the bad publicity was more costly than the settlement.

Had Ellison remained a few more years I doubt they would have settled.
And yes African countries are less capable of holding such companies to account. And not due to any moral differences. Just simple practicality. Our governments have far less resources to battle them (Oracle has far more money than our government does in fact its more than our entire GDP) and bad publicity here is far less of a concern. We are a tiny market. Even if we actually banned their products here they would barely notice the loss.