CONCEPT
Low-End Disruption
The form of disruption that enters an existing market at the bottom, serving customers the incumbent has chosen to cede because they are the least profitable — and progressively moving upward as the disruptor's performance improves.
Low-end disruption enters an existing market at the bottom, targeting customers whose needs are overserved by the incumbent's current product and who would welcome a simpler, cheaper alternative. The incumbent, evaluating the low-end market by its own margin standards, typically welcomes the disruptor's entry — the ceded customers are low-margin, and losing them improves the incumbent's product mix and quarterly metrics. The disruptor uses the margins acceptable to its lower cost structure to fund improvements, moving progressively upward through the market. By the time the disruptor reaches the high end, the incumbent's cost structure, designed for a broad portfolio, no longer supports the compressed product line that remains. The SaaS industry in 2026 is experiencing this exact sequence.
In The You On AI Field Guide
The defining low-end disruption case in Christensen's original work is the mini-mill displacement of integrated steel. The mini-mills entered with rebar — the lowest-margin steel product — and moved progressively upward through angle iron,