If you see it from the other side, it is more than 50,000 for each of the 200 people, even if the lawyers will likely get 1/3 of that, it remains 35,000 US$ or so.
For what?
Having been NOT hired (but making it to the interview).
Presumably, even if a bit "old" according to Google standards, these people are anyway "top notch" in programming and almost surely soon found an appropriate job at some other company.
So, the compensation is seemingly very hypothetical, covering what? 2-3 months of wages for someone hypothetically getting 140,000-200,000 US$ per year.
Or is it because the applicant could have been hired at 160,000 US$ per year but only makes - poor little thing - 125,000 US$ from the company that hired him/her, and so first year is covered?