History shows that major technological shifts like the internet and AI require a fundamental re-architecting of everything from silicon and networking up to software. The industry repeatedly forgets this lesson, mistakenly declaring parts of the stack, like hardware, as commoditized right before the next wave hits.

The power consumption of AI data centers has ballooned from megawatts to gigawatts. Arista's CEO asserts that securing this level of power is a multi-year challenge, making it a larger and more immediate constraint on AI growth than the development of networking or compute technology itself.

While AI models and coding agents scale to $100M+ revenues quickly, the truly exponential growth is in the hardware ecosystem. Companies in optical interconnects, cooling, and power are scaling from zero to billions in revenue in under two years, driven by massive demand from hyperscalers building AI infrastructure.

The focus in AI has evolved from rapid software capability gains to the physical constraints of its adoption. The demand for compute power is expected to significantly outstrip supply, making infrastructure—not algorithms—the defining bottleneck for future growth.

Unlike the speculative "dark fiber" buildout of the dot-com bubble, today's AI infrastructure race is driven by real, immediate, and overwhelming demand. The problem isn't a lack of utilization for built capacity; it's a constant struggle to build supply fast enough to meet customer needs.

AI networking is not an evolution of cloud networking but a new paradigm. It's a 'back-end' system designed to connect thousands of GPUs, handling traffic with far greater intensity, durability, and burstiness than the 'front-end' networks serving general-purpose cloud workloads, requiring different metrics and parameters.

Unlike the dot-com era's speculative approach, the current AI infrastructure build-out is constrained by real-world limitations like power and space. This scarcity, coupled with demand from established tech giants like Microsoft and Google, makes it a sustained megatrend rather than a fragile bubble.

Unlike railroads or telecom, where infrastructure lasts for decades, the core of AI infrastructure—semiconductor chips—becomes obsolete every 3-4 years. This creates a cycle of massive, recurring capital expenditure to maintain data centers, fundamentally changing the long-term ROI calculation for the AI arms race.

According to Arista's CEO, the primary constraint on building AI infrastructure is the massive power consumption of GPUs and networks. Finding data center locations with gigawatts of available power can take 3-5 years, making energy access, not technology, the main limiting factor for industry growth.