At my first company out of University, we found our app was being distributed on "piracy" versions of the Play Store, with all the IAPs bypassed and given for free. We spent months cracking down on it, and the end result was bugs in our detection system negatively affected our users, and I believe we also introduced a crash which hurt our Play Store ranking.
I still remember having a meeting about it with the CEO, as we all collectively realized that blocking the free version of our app made no positive impact whatsoever.
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