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The era of heavily subsidized, flat-rate AI is ending due to physical constraints on chips, power, and memory. The resulting shift to usage-based pricing forces companies into an ROI-driven mindset, which naturally slows the pace of displacing human workers with costly AI tokens, acting as an economic brake on automation.

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Current AI models are priced too cheaply, leading to inefficient consumption like using powerful models for simple tasks. As prices rise to reflect true costs, companies will need to optimize usage. This may create a new role, the 'Chief Token Officer,' responsible for allocating AI compute resources versus human capital.

While AI agents seem to create infinite intelligence, they reveal more fundamental constraints. The real limits are no longer human time, but the finite capacity of markets to absorb outputs, the hard financial cost of tokens and compute, and the human ability to provide effective judgment and evaluation.

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.

The most logical pricing model for AI is to benchmark it against the human labor costs it displaces. While a PR challenge for legacy companies, AI-native firms will likely adopt this outcome-based model because it is more tangible for finance leaders than abstract, unpredictable credit systems.

While demand for AI compute is massive, a potential overbuild by hyperscalers is naturally limited by real-world shortages of energy ("watts") and manufacturing capacity ("wafers"). These physical constraints may act as a governor on the market, preventing a classic tech over-investment bubble and bust cycle.

The end of subsidized AI pricing is forcing companies to confront its true operational expense. As AI bills begin to rival payroll, a fundamental transition is occurring where capital expenditure on silicon (CapEx) is displacing operational expenditure on human neurons (OpEx), reshaping corporate budgets.

The AI buildout won't be stopped by technological limits or lack of demand. The true barrier will be economics: when the marginal capital provider determines that the diminishing returns from massive investments no longer justify the cost.

The Industrial Revolution shifted economic power from land to labor. AI is poised for an equally massive transition, making capital, not labor, the primary driver and limiting factor of production. As AI increasingly substitutes for human labor, access to capital for machines and computation will determine economic output.

While ethical debates about AI's risks continue, the actual slowdown in AI's societal integration is being driven by practical constraints like the limited supply of compute, data centers, and grid power. This physical reality is a more powerful force for gradual adoption than any organized pause.

Citadel contends that displacing white-collar work requires massive compute increases. Rapid AI adoption would drive up compute's marginal cost due to physical limits on energy and capital. If AI compute becomes more expensive than human labor for a task, substitution won't occur, creating an economic boundary.