The lesson should have been that Thiel and other billionaires have such enormous influence over governments and courts that he's a direct threat to democratic systems. Just look at how things turned out, Hogan couldn't touch Gawker because of Freedom of the Press, but then Thiel got involved and suddenly the 1st Amendment stopped protecting Gawker. The moment a billionaire got involved the legal system changed.
And if you need any more proof that people like Thiel are a threat to democracy, he's currently funding conservative candidates in the US who believe the presidential election was "stolen" from Trump.