No doubt. Every mistake (or "mistake") once made by the platform would almost inevitably be repeated by many API users, until some of them become platforms them

No doubt. Every mistake (or "mistake") once made by the platform would almost inevitably be repeated by many API users, until some of them become platforms themselves. there might be some technical measures that can improve things somewhat, but overall I suspect it will make the security/privacy situation worse. Instead of keeping an eye on one shark, individuals and regulatory bodies would have to apply the same level of vigilance to each of a thousand piranhas.