The modular thesis won. That part is no longer contested: execution happens on rollups, settlement anchors to a base layer, and data availability has become a market you can buy by the byte. What is contested, and what this note examines, is whether data availability is a good business or merely a necessary one. The distinction matters because a great deal of capital has been deployed on the assumption that these two things are the same.
The supply curve is winning
Consider what has happened to DA pricing over the past two years. Blob capacity on Ethereum has expanded on schedule. Alternative DA layers ship larger blocks each quarter. Meanwhile, compression at the rollup level keeps reducing the bytes each transaction needs to post. Supply grows, demand per transaction shrinks, and the clearing price trends toward the marginal cost of storage and propagation, which is low and falling.
For users this is a triumph. Fees at the application layer are now dominated by execution and priority, not data. For DA as an investment category, it implies something less comfortable: the commodity case is the base case. When your product is undifferentiated bytes with security attached, you compete on price, and price competition among well-capitalized protocols is a gift to consumers, not to token holders.
In every infrastructure cycle, the layer everyone calls the bottleneck eventually becomes the layer nobody can charge for.
Where the value actually pools
Commoditization does not mean the category is uninvestable. It means the returns migrate to whatever remains scarce. We see three durable pools:
- Security lineage. DA inheriting the base layer's validator set carries a trust premium that alternatives must discount against. Premiums on trust have historically proven stickier than premiums on throughput.
- Interoperability position. A DA layer that is also the coordination point for proofs, sequencing, or cross-rollup messaging is no longer selling bytes. It is selling placement in a network, and network position resists price competition in a way that capacity never does.
- The proof supply chain. As DA gets cheap, verification becomes the binding constraint. The teams turning proving into a fast, cheap, outsourced service are positioned the way sequencers were three years ago: underpriced because the bottleneck has not become obvious yet.
Portfolio implications
Our positioning follows from the analysis. We treat raw DA capacity as infrastructure to be used, not owned, with the exception of networks holding genuine security lineage or coordination positions. We are overweight the layers above: proving, sequencing, and the interoperability fabric that turns a hundred rollups into something a user experiences as one system. The endgame of modularity is not that every layer captures value. It is that a few coordination points do, and the rest becomes plumbing. Identifying which is which, before the market does, is the whole job.