Re-decentralizing web and Internet-based technologies is gaining momentum. Just recently there was a Decentralized Web Summit where many projects were represented. But while people contemplate importance of decentralized technologies and are building alternatives, to me it seems we are forgetting one important lecture from the past: we should be building layered technological stacks and not vertically integrated ones. This is how you can encourage diverse implementations (critical for stability of decentralized technologies) and experimentation at each layer without having to reimplement a whole stack. I can understand why this is happening. It is already hard enough to develop decentralized technologies. So it feels easier to control the stack at least vertically. But we should not be building decentralized technologies because it is easy. But because it is hard.