But the web is not a decentralized place. You put content on servers, and everybody downloads that content from there. There a copies or caches, yes (CDNs but a

But the web is not a decentralized place. You put content on servers, and everybody downloads that content from there. There a copies or caches, yes (CDNs but also old-school http proxy caches). But if I remove content from my server (or a tweet), its no longer accessible by standard means. We build a whole set of technologies to not have a single-point-of-failure (i.e. load balanced servers + replication) but for example in CCN/IPFS you can publish content a single time from a very slow dialup line, and in theory it could be accessed by millions of users (which in todays world is only possible if you put it on a CDN or run your own datacenter to satisfy requests at that scale).