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Economics of AI: Inversion of Software Economics
Historically SaaS businesses get cheaper as you grow. AI businesses often do the opposite, adding incremental compute cost with every new user.
Traditional SaaS
New AI Business Models
- SaaS is built on spreading fixed costs, AI scales by stacking variable costs
In SaaS, every new user is close to zero marginal cost. In AI, each new user generates incremental compute spend, so revenue and costs grow together. - More users actually hurt unit economics
Growth increases cost per user instead of lowering it. New capabilities, reliability, and coverage are variable costs that increase compute for every call. - Early margin stability is a "false positive"
Early efficiency is misleading. The margin break happens after initial success, when growth forces a more expensive operating mode.
Growth is no longer a default path to profitability. In AI businesses, it actually exposes the variable costs hidden in your system.