Divine Angel said:

What I do think, however, is that what we’ve seen so far is but the tip of a very large, very deep iceberg. It involves a lot of people with money and power. It involves people blackmailed/threatened to keep their mouths shut. What’s going to come of it? Who knows.

In addition to all your points, don’t forget that these people are very litigious. Nobody dares to publish stories on these sorts of topics for fear of being sued, and then chased and hounded to the point of bankruptcy. The rich use the law to protect themselves from consequences.