ARM doesn't make chips. They license the blueprints and collect 1-2% royalties on every chip shipped. 55% of revenue comes from royalties, with nearly 100% margins. A perfect tollbooth business, and the take rate is growing with newer architecture.
**The Moat**
* 99% of smartphones run ARM architecture
* Lock-in is brutal: Apple spent billions switching MacBooks from Intel to ARM
* Intel burned billions trying to enter mobile, gave up in 2016
**Growth**
* Cloud share went from 9% to 20% between 2022-2025, they're forecasting 50% by end of 2025
* ARM CPUs use 30-60% less power than x86 (massive for data centers)
* AI inference favors ARM: 168% higher throughput vs AMD for LLMs
* Automotive chip market share grew 36% to 44% while the whole market expanded from $15B to $22B
**Why It's Special**
ARM wins regardless of who wins. Apple vs Samsung vs NVIDIA? All pay ARM. It's software economics (98% gross margins) in a hardware world.
**Risks**
RISC-V (open-source alternative), customer concentration, geopolitics
**Conclusion**
Best way to play tech advancement without trying to pick specific winners. The valuation actually reflects the business mode