Rosa Del Mar

Issue 29 2026-01-29

Rosa Del Mar

Daily Brief

Issue 29 2026-01-29

Ai Unit Economics Token Demand And Metering

  • Anthropic’s gross margin is said to have improved from roughly -94% last year to about +40% this year.
  • Brex’s sale price is argued to be a negative valuation comp for Ramp because applying a similar ~7x revenue multiple to Ramp’s ~$1B run-rate implies a far lower value than Ramp’s $32B private valuation.
  • Net revenue retention of 120–130% is characterized as a past era that may not return regardless of agent quality.

Server-Side Ingestion Capability Via Multipart File Uploads

  • Datasette's Request object supports multipart/form-data file uploads using await request.form(files=True).
  • A new ?_extra=render_cell parameter is available on both table and row JSON pages to return results of executing the render_cell() plugin hook.
  • The recommended development environment for working on Datasette now uses uv.

Product Form Factors And Scale Enablers

  • Key design dimensions for plug-in batteries include 120V versus 240V compatibility and placement choices such as wall-hanging, appliance integration, or corner placement.
  • Soft costs are typically 50% or more of a residential DER install, and plug-in models can drive major soft-cost components (permitting, labor, and customer acquisition) toward zero through self-serve purchase-and-plug-in deployment.
  • Some utility stakeholders argue that even non-exporting plug-in batteries should require permitting or permission because they interconnect to the electrical system.

Ai As Macro Stabilizer For Depopulation And Productivity

  • Declining population growth combined with potentially lower immigration could make human workers more scarce and valuable over the next 10–30 years in many countries.
  • AI outcomes will be shaped by interacting unknowns including politics, unions, war, and China’s actions, making it dangerous to prejudge moats and market structures.
  • AI will raise baseline performance for competent practitioners while allowing top performers to become dramatically more productive, creating “super-empowered” individuals.

Process And Psychology Over Strategy

  • Guest trader Jack Kellogg describes obsessive overtrading and working through severe illness as causes of multi-year burnout, and claims improvement came from stepping away in poor conditions and prioritizing recovery routines.
  • Guest trader Lance Breitstein argues that strong traders exploit edge skew by sizing exponentially larger on rare high-conviction opportunities rather than sizing linearly across all setups.
  • Guest trader Peter Brandt claims the market sets a 'tuition' for learning to trade and that becoming consistently confident typically takes about three to seven years, with rushing often ending badly.