So because -company- does illegal thing and people respond by using whatever means they have Google should silence the masses of disaffected users just because some people changed their rating? That is some grade a:
"It is difficult to get a man to understand something when his salary depends upon his not understanding it." -Upton Sinclair
Google doesn't care whether Robinhood succeeds or not. It cares whether people trust the Play Store ratings (and more broadly, trust the Play Store itself). They'll do what's needed to achieve their goals, not Robinhood.
it similar to how hacker news penalizes submission that rally for upvotes (specifically I remember a discussion about how posting links of your submission to twitter can penalize it)
"It is difficult to get a man to understand something when his salary depends upon his not understanding it." -Upton Sinclair