The fundamental laws that determine whether decentralization or centralization dominates is the rate of accessible content creation.
If a centralized organization (AOL & Yahoo, early and late 90s respectively) can create more content than the Internet (decentralized, early/mid 90s), then the former dominates.
If the greater number of content developers afforded by a decentralized system can create more content (Internet, late 90s - 10s), then it dominates.
Attempting to co-opt both strengths via platforms (Google & Facebook, 10s - now) is a newer phenomenon, but fundamentally still has the same tension.
If anyone wants decentralized metaverse to prevail, work on open dev tooling, content creation tools, and client standards. Not because they'll shift the balance, but because with them creators will shift the balance.