Though Google is merely a storefront en payment intermediary of what the banned user bought (apps and movies), it could be argued the client of google per se is the companies selling the product, they're the one paying Google a share of their sales.
Not that I disagree with you here just making the argument.
Like parent said, I found that google has decent customer service once you clearly become their client (which I have been on adwords, analytics and on gsuite).