The prediction concerns the entire 2020s decade (“this decade is going to realize” a profound, broad shift toward decentralization in trading, communication, and building). That end point (December 31, 2029) has not yet occurred, so it’s too early to say definitively whether the prediction ends up correct.

Evidence so far shows meaningful but partial movement toward decentralization:

• DeFi and decentralized trading have grown substantially since 2020. As of Q2 2025, decentralized finance platforms hold about $123.6 billion in total value locked (TVL), with hundreds of protocols over $100M each, indicating a sizable decentralized trading and lending ecosystem. (coinlaw.io)
• Web3 and decentralized applications (GameFi, Web3 social, DAOs, tokenization of real‑world assets) have expanded, with millions of daily active wallets in GameFi and Web3 social by late 2024–2025 and ongoing enterprise experiments in blockchain-based finance and supply chains. (defi-planet.medium.com)
• Decentralized social/communication platforms have seen surges driven by dissatisfaction with centralized platforms (notably Twitter/X). Mastodon and other Fediverse platforms grew after Musk’s Twitter acquisition, and newer decentralized social networks like Bluesky (built on its own AT Protocol) reached tens of millions of registered users and significant daily activity during 2024–2025, often following controversial moves or outages at X. (en.wikipedia.org)

At the same time, there is strong evidence that centralized platforms remain dominant in how most people trade, communicate, and build online:

• Major centralized social and tech platforms (Meta’s apps, YouTube/Google, TikTok, X, Amazon, Apple, Microsoft, etc.) still command the vast majority of user time, advertising dollars, and infrastructure control. Recent antitrust cases explicitly describe a competitive landscape still dominated by large centralized firms rather than decentralized alternatives. (washingtonpost.com)
• Many decentralized platforms experience boom–bust user cycles and remain niche compared with mainstream centralized services, suggesting that a full “broad societal shift” has not yet clearly materialized.

Because:

1. The time horizon (the 2020s) is not yet complete; major shifts could still occur later in the decade.
2. Current evidence shows significant but not yet society‑wide displacement of centralized systems by decentralized ones.

…the fairest classification today is “inconclusive (too early)” rather than definitively right or wrong.