Ah, you're suggesting Google uses its position on the Play Store to fend of abusers of an unrelated service, that happens to be owned by Google as well? I don't think that will work in Google's favor when they try to defend any anti-trust cases slung their way, or being active right now. Google has many other subtle ways that garner less attention to ward of any misuses. Subtly downrank in the search index, throttle any traffic heading their way, suggest other applications in the play store on top, accidentelly flag Telegram as a "risky" platform, etc.