Plank believed his lack of oil industry experience was a benefit, not a liability. It prevented him from adopting the flawed, conventional wisdom of his competitors and allowed his team to develop their own first-principles approach, what he called "the Apache way."

The conglomerate model was effective when global expansion and offshore productivity were key value drivers. As those advantages matured, the winning model has shifted to combining deep specialization in a single sector with the global reach and processes of a large-scale corporation.

Raymond Plank built his $50B oil company by first creating a tax-efficient investment vehicle for wealthy individuals. This solved his capital-raising problem by dramatically reducing investors' downside risk, making it easier to fund drilling operations without traditional bank financing.

CEO Vasant Narasimhan explains that even successful, diversified businesses within a pharma conglomerate lead to strategic capital misallocation. Focusing on the core competency of discovering novel medicines created far more value than maintaining a diversified portfolio of otherwise healthy businesses.

Businesses get into trouble by diversifying too early. Instead, focus on perfecting your primary revenue driver—the "spine" of the company. Once that foundation is solid and you're world-class at it, you have earned the right to expand.

Apache's counter-positioning strategy was to buy smaller, under-invested wells that major oil companies considered insignificant. Plank's team believed they could operate these assets more efficiently, famously describing their strategy as being "like pigs following cows through a cornfield."

When a business is struggling with multiple revenue streams, the best strategy is to simplify. By cutting underperforming or noisy channels, you can amplify your focus on the one or two profitable areas. This distillation creates the clarity needed to stabilize and eventually rebuild the business.

Blanc's successful turnaround of Aviva began by divesting eight businesses where they lacked a top-three market position. This freed up capital, reduced debt, and allowed the core, high-scale operations in the UK, Ireland, and Canada to shine, proving that focused scale beats broad but shallow market presence.

Amanda Blanc transformed Aviva by divesting from any market where the company wasn't a top-three player. This sharpened focus, deleveraged the balance sheet, and revealed the strength of their core, scaled businesses.