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A comment on Justice Department to File Antitrust Suit Against Google. Parent comment

Re:Justice Department to File Antitrust Suit Against Google by UncleMeat on Tuesday October 20, 2020 @12:58PM (#24839717)
But the argument is that 20% isn’t enough to sustain another business. This is plainly false.
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Re:Justice Department to File Antitrust Suit Against Google by voisin on Tuesday October 20, 2020 @04:37PM (#24842114)
Doesn’t it depend on how competitive the other 20% is? Having one player with 80% and the remaining 20% split amongst 20 companies would indicate market dominance and that the others are competing with each other and not meaningfully with the market leader. I think the Herfindahl-Hirschman Index[0] is used in these cases but I am not sure what it looks like for search.

[0] https://en.m.wikipedia.org/wiki/Herfindahl–Hirschman_Index

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