The most central goal of blockchain from a technological standpoint lies in the technology that offers tight security and perpetuality for participants' property using a public ledger to block any forgery or falsifications by hackers.
In all internet services, various forms of personal information is saved and used on the database servers of many online service providers (OSP), third party certification authorities, and user devices. Based on this, many important activities take place over the internet, uninterrupted such as login, various verifications, shopping, and financial payments among others.
Even in blockchain services that are oriented towards decentralization, this shows the limits that already exist in other types of centralization.
General internet service (including block chain service) environment