Summed up the real problem with "thousands of dollars"
If the process was cheap and affordable or free for the masses then these judgements would be fought, but while it requires "thousands of dollars" it is limited to the rich, who can therefore get away with anything and also rewrite history. After all they must be right because they are rich.
Obviously there is scope for an internet judge judy or whatever whereby an independent panel of internet users review supposed libel actions and decide whether the "review" goes to far. That would open processes up to the masses who cannot afford litigation in any country,