When Success Becomes a Blind Spot

Success is often considered the ultimate validation of a leader’s judgment. Yet, ironically, it is this success that eventually erodes future decision-making. Overconfidence, by definition, is a cognitive bias where a person’s subjective confidence in their abilities, skills and judgements exceeds their objective accuracy. This rarely appears when faced with adversity; it only grows through repeated success. Success clouds the brain’s ability to quantitatively judge a scenario, as repeated success builds confidence, and this confidence reinforces beliefs to such an extent that the brain stops questioning them. This pattern manifests in different forms—strategic, behavioural, and systemic—illustrating that overconfidence emerges not as a singular flaw but as a multifaceted leadership risk.

One clear example of strategic overconfidence is Blockbuster’s downfall in the face of Netflix.  Blockbuster was known for revolutionising movie rentals with massive inventory, a bright, retail-store experience, and rapid expansion through aggressive franchising, hitting 4,500 stores by 1995. This dominance fostered a false belief that its business model was not only successful but also enduring. As the era of digital distribution emerged, Blockbuster underestimated both the pace and scale of the disruption it would cause. Early opportunities to pivot to digital distribution, including offers to engage with Netflix, were dismissed on the assumption that consumer behaviour would remain unchanged. This confidence in past success translated into strategic inertia, delaying innovation until other customers had already reshaped the market. Blockbuster failed solely due to gross negligence by the leadership, which believed in what had already worked before, showing that leadership overconfidence can drive organisations into blind alleys.

Another strong evidence of overconfidence is displayed in Uber’s rise under Travis Kalanick, where rapid success ingrained a culture of operating as if it were above all restrictions. Uber initially succeeded by disrupting traditional taxi markets with an aggressive, but effective, rule-breaking expansion. As time passed, this evolved into a leadership approach that prioritised acceleration over analysis and assurance over liability. Regulatory standards, ethical concerns, and internal issues were very frequently overlooked, showing a deep-rooted overconfidence that stemmed from past success, which led them to take unwanted future risks. Unlike Blockbuster, Uber accelerated towards change rapidly, without enough reflection. This highlights a very important fact – overconfidence does not always induce inertia; it can also be the root cause for a whole lot of poorly set-up actions that create internal instability.

A third perspective stems from Boeing’s crisis with its 737 MAX program. This case illustrates how systemic and technical overconfidence can lead to an organisation’s downfall. Boeing, which was regarded as the market leader in engineering expertise, relied for far too long on its legacy and reputation for its technical know-how. In an effort to adapt to an ever-changing market, Boeing introduced software-based solutions to eliminate design changes, assuming that these changes would be sufficient to ensure maximum safety and optimal performance. However, this confidence in technology and technical systems led Boeing to underestimate the risks and to ignore critical warnings. Concerns were raised internally but not escalated at the required pace, and complex systems were not fully embraced. Severe consequences followed, highlighting that overconfidence is not just a leadership problem; it can extend to systems and organisational processes. In this particular case, belief in technology led to Boeing’s downfall, not the belief in judgment.

If we look closely, a surprising pattern emerges across all three cases. Success creates a vicious cycle in which confidence rises, and scepticism diminishes. The leadership groups tend to fall back on established outcomes and beliefs and are not ready to accept contradictory views. As a result, an environment is created where dissent is limited. The whole process of decision-making shifts from evidence-based to past successes, increasing the risk of external vulnerability and internal blind spots.

The leadership group’s main focus should be crystal clear: confidence is essential for success, which ultimately drives decisiveness and inspires trust. But it should be made absolutely certain that this confidence fostered by success shouldn’t turn into overconfidence. For a leader to be effective, mechanisms need to be put in place that challenge the status quo, enabling people to play devil’s advocate and consider their own opinions. Primarily, leaders need to imbibe the value of self-awareness and adopt a mindset that accepts they might be wrong sometimes.

In an ever-changing, rapidly growing world, the greatest risk is not failure, but the illusion of invincibility created by success. The cases discussed above are clear examples of how overconfidence led to their downfall. The most important fact to keep in mind is that overconfidence is never sudden; it is just a shift in the mindset, which, if left unchecked, can even undermine the most successful leaders. True leadership, therefore, lies not in unwavering belief in one’s own correctness, but in the discipline to question it.