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The thinning middle of the SaaS stack

Tools collapsing into platforms, platforms collapsing into models. A working map of where durable value still lives.

The mid-tier SaaS product — the one that wraps a workflow in a UI and charges per seat — is having a hard year. Above it, platforms keep absorbing features. Below it, models keep absorbing capabilities. The middle gets thinner.

Where value is migrating

Two directions, roughly. Up: into the platforms that own the data and the identity layer. Down: into the model itself, when the workflow can be expressed as a prompt against a well-typed schema.

Diagram 1 — conceptual view of Thinning Middle Of Saas
FIG. 1Where value is migrating — a one-glance view of the structure described in this section.
  1. Distribution and data gravity moves up — into Salesforce, ServiceNow, Notion, Slack, and the major clouds.
  2. Reasoning and synthesis move down — into the model, accessed by anyone with a key.
  3. What is left in the middle is integration, opinion, and trust — and those are real, but smaller, businesses than the last decade promised.

Implications for builders

If you are starting something, the most durable place to stand is on a wedge the platforms cannot copy in a quarter and the model cannot do alone. Often that means opinionated workflows for a specific role, not horizontal tools.

Diagram 2 — conceptual view of Thinning Middle Of Saas
FIG. 2Implications for builders — a one-glance view of the structure described in this section.
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