The internet is decentralized by design. It took off with hackers running independent servers in their basements. Direct peer-to-peer communication was common among the first inhabitants of the web. Internet was the liberating force that connected and empowered people. The ability to send information instantly to any corner of the world seemed surreal and fascinating.
As more and more of the population joined the net it became more convenient. It shifted towards centralized services and walled gardens. We have waived our rights for the faster, sleeker experience which gradually turned into ad-ridden, attention-grabbing nightmare that we face today. Nowadays the web is ruled by corporate overlords who made ego-driven photo sharing easy even for the least tech-savvy of us. Somewhere along the way the vision of decentralization was lost. It was traded in for the vision of convenience and profit.