In a recent LinkedIn post, Mark O’Donnell discusses a subtle yet significant danger facing companies implementing the Entrepreneurial Operating System (EOS): the drift away from its core language and structure.
O’Donnell warns that what often starts as minor adjustments, such as renaming meetings or rephrasing tools with the justification “We just made it our own,” can lead to a dilution of the system’s effectiveness. He emphasizes that the EOS terminology is not merely superficial but deeply structural, carrying inherent expectations and accountability.
“The EOS language isn’t cosmetic. It’s structural. A Rock isn’t just a priority. IDS isn’t just problem-solving.”
Mark O’Donnell argues that this linguistic foundation is crucial for maintaining the integrity and impact of the EOS framework. By changing the words, he explains, companies risk eroding the standards that the system is designed to uphold.
The Structural Importance of EOS Terminology
According to O’Donnell, the power of EOS lies not in its customizability but in its consistent application. He points out that the specific terms used within EOS, such as “Rock” for priorities or “IDS” (Identify, Discuss, Solve) for problem-solving, are more than just labels. They are embedded with specific meanings and processes that drive accountability and clarity within an organization.
O’Donnell highlights the potential for misunderstanding when these terms are altered. When a company decides to “make it their own” by substituting familiar language for EOS terms, they may inadvertently strip away the built-in expectations associated with them. This can lead to a gradual erosion of the system’s intended outcomes.
“These words carry built-in expectations and accountability.”
As Mark O’Donnell notes, this linguistic drift can happen almost imperceptibly. The initial changes might seem minor, but over time, they accumulate, leading the company further away from the core principles of EOS without necessarily realizing it.
Consistency Over Customization
The central thesis of O’Donnell’s post is that true success with EOS comes from faithful implementation, not extensive customization. He contends that companies that achieve the greatest benefits are those that adhere most closely to the system’s established methodologies and language.
Identifying and Addressing the Drift
O’Donnell suggests that this drift is a common phenomenon, often going unnoticed until its effects become significant. He states:
“Most EOS companies drift… and they don’t even notice it’s happening.”
He further elaborates on the consequences: “Change the word, and over time, you change the standard.” This underscores his point that linguistic changes are not trivial; they have a direct impact on the operational standards and performance of the business.
Mark O’Donnell indicates that his recent newsletter delves deeper into the reasons why this language is so vital and offers guidance on how to correct the course if a company has already begun to drift. He encourages those interested in a more in-depth exploration to subscribe to his newsletter, which is moving to a new platform.
📝 About This Content
This article is based on insights shared by Mark O'Donnell on LinkedIn.
📅 Originally posted on February 25, 2026 | View original post on LinkedIn →