Nebius's talks to acquire AI21 reflect a broader trend where NeoClouds (e.g., CoreWeave) are buying software companies. This strategy aims to create a full-stack platform, offering more than just compute power, thereby increasing customer stickiness and diversifying revenue streams beyond commoditized hardware rentals.

While custom silicon is important, Amazon's core competitive edge is its flawless execution in building and powering data centers at massive scale. Competitors face delays, making Amazon's reliability and available power a critical asset for power-constrained AI companies.

For long-term defensibility, AI companies must control the entire stack: the model, the middleware, and the end-user work product. While some can start with the model layer, others can successfully start with the user interface and vertically integrate downwards over time to build a durable business.

Google's competitive advantage in AI is its vertical integration. By controlling the entire stack from custom TPUs and foundational models (Gemini) to IDEs (AI Studio) and user applications (Workspace), it creates a deeply integrated, cost-effective, and convenient ecosystem that is difficult to replicate.

Nebius conceptualizes its growth in four layers: 1) Bare metal (megawatts) for hyperscalers, 2) Managed cloud (GPU hours) for researchers, 3) Managed inference (tokens) for AI companies, and 4) Agentic platforms (tasks) for developers. This strategy moves them up the value stack, away from pure commodity infrastructure.

Unlike competitors who specialize, Google is the only company operating at scale across all four key layers of the AI stack. It has custom silicon (TPUs), a major cloud platform (GCP), a frontier foundational model (Gemini), and massive application distribution (Search, YouTube). This vertical integration is a unique strategic advantage in the AI race.

Creating a basic AI coding tool is easy. The defensible moat comes from building a vertically integrated platform with its own backend infrastructure like databases, user management, and integrations. This is extremely difficult for competitors to replicate, especially if they rely on third-party services like Superbase.

The enormous scale of Meta's deal with specialized data center operator Nebius proves that "NeoClouds" are now critical infrastructure players. They are successfully competing with hyperscalers by offering specialized services and, crucially, available capacity, making them essential partners for AI giants.

Roman Chernin argues that if the AI market consolidates into a few dominant players, infrastructure companies like Nebius lose their value-add software stack and become simple commodity providers. A diverse ecosystem of builders is essential for their long-term viability.