Another excellent read.
The other factor, in addition to talent, necessitating a review of internal vs. external bounds is resilience. Covid and recent geopolitical developments (e.g., Russia, China) have triggered supply chain strains resulting in re-calibration of efficiency vs. resilience trade-offs. To be fair, this does include labor but the issue is much broader than talent.
Precision will require re-drawing lines to accommodate operational resilience; particularly around Important Business Services. Regulatory bodies are also interjecting and driving reconsideration through legislation (e.g., DORA).