CRO Half-Life is the predictable decay curve of a new Chief Revenue Officer's credibility when they inherit a broken revenue system. The curve runs approximately 18 to 24 months. Month one is honeymoon. Months three through nine are strategic planning and team reshuffling. Months nine through fifteen are tactical execution against a system that cannot support the strategy. Months fifteen through twenty-four are the slow decay, the board's shifting confidence, and the search for a replacement who will run the same curve again.
Why this exists.
The average tenure of a Chief Revenue Officer in venture-backed B2B has compressed to under two years. The pattern is consistent enough across companies and stages to be treated as a structural phenomenon rather than a series of individual hiring failures. CROs are recruited on the strength of past results, given a mandate to fix revenue, and removed when the underlying system fails to respond to the strategies that worked elsewhere.
How it operates.
The decay is driven by the mismatch between the CRO's authority and the architecture they inherit. They can change the team. They can change the playbook. They can change the comp plan. They cannot, in their first eighteen months, redesign the pricing, the positioning, the product, the data infrastructure, the buyer journey, or the cross-functional dependencies that determine whether the new strategy can be executed. The strategy is sound. The architecture cannot support it. The board sees the lagging numbers and concludes the wrong CRO was hired.
How to detect it.
The pattern is observable in board materials. Quarter one through three: language of momentum and transformation. Quarter four through six: language of leading indicators and pipeline build. Quarter seven through eight: language of macro headwinds and competitive dynamics. Quarter eight forward: a search committee. Companies that break the curve are companies that treat the CRO transition as a Revenue Architecture redesign rather than a leadership change.