A decentralized system will never work because 99% of users do not care at all; the centralized systems are easier to sign up for and use. It's been demonstrated over and over and over again.
Even if the underlying tech is decentralized, the community will settle around one or a few big instances (for example, Gmail and GitHub) which often end up having significant control over the trajectory of the entire ecosystem. If you run your own email server and you get put onto Google's spam list - you're fucked.
Even if the underlying tech is decentralized, the community will settle around one or a few big instances (for example, Gmail and GitHub) which often end up having significant control over the trajectory of the entire ecosystem. If you run your own email server and you get put onto Google's spam list - you're fucked.