The future is multi-layered.
~1,000 execution layers (rollups, volitions, validiums)
~100 data availability layers (data sharding, decentralized committees)
~10 settlement layers (maximally secure, sustainable & decentralized)
The era of monolithic blockchains (L1s) is ending.

Why?
Put it simply:
Specialized execution layers like rollups bring >100x computational efficiency, 10x-100x data compression.
DA layers increase throughput with greater decentralization, parallelize ~1,000x.
1,000,000x more efficient than L1s long term.
The only way.

To put it another way, if the blockchain industry was multi-chain w/ many L1s, it would be a fragmented mess: horrible UX & heavily crippled scalability.
With a modular, multi-layered approach, we'll have far superior UX, and ~infinitely higher TPS.
Only way to global scale.

What about settlement layers, then? With an abundance of scale, their role is to focus on being maximally secure, decentralized, resilient; anchor the economy with robust money; be the coordinator of liquidity, and arbiter of truth. This is by far the hardest to accomplish.

Must leave this here: