A few possible reasons: Cheap & reliable electricity (https://www.axios.com/local/phoenix/2024/04/26/arizona-power-outages-electic-grid https://www.axios.com/lo

A few possible reasons: Cheap & reliable electricity (https://www.axios.com/local/phoenix/2024/04/26/arizona-power-outages-electic-grid https://www.axios.com/local/phoenix/2024/04/26/arizona-power...), low seismic activity (https://www.spglobal.com/mobility/en/research-analysis/briefcase-taiwan-earthquake-puts-spotlight-back-on-chip-supply.html https://www.spglobal.com/mobility/en/research-analysis/brief...), existing semiconductor supporting industries (as mentioned elsewhere in this thread), and a politically favorable business environment.