Trajectories of sustaining & disruptive technologies (Christensen 1997)
12 October 2026
Today's thought comes courtesy of Montoya & Kita 2018, who performed some correlation analysis of the independent and dependent variables associated with Christensen’s theory of disruption, as developed by other workers such as Sood & Tellis, Schmidt & van der Rhee, Dosi, and Henderson & Clark. Christensen's original theory, as elaborated in the 1997 book "The innovator's dilemma: when new technologies cause great firms to fail", has a number of facets, but posits that disruptive technologies actually enter the market at a lower level of performance than the established technologies. The reason why these technologies can persist at all, at least at first, is that they serve new and/or underserved customers in the market and (implicitly) have growth potential that the incumbents have more or less tapped out.
Product performance for both incumbent and disruptive technologies increase over time thanks to 'sustaining' technologies, with the key being that sustaining technologies increase performance along dimensions that mainstream customers in developed markets already value. This basic framework has been elaborated over time to include different innovative concepts (e.g. Henderson & Clark's concept of "architectural innovations"), with Montoya & Kita's contribution being to run the numbers using Spearman correlation using market share and net profits as indicators of disruption.
The final piece of the puzzle was to incorporate Geoffrey Moore's concept of the 'chasm', which is a theory of market development where a small market/sub-market arises to serve new or under-served customers, with an adoption gap (the eponomous chasm) sitting between this new market and mainstream adoption. What Montoya & Kita's analysis suggests is that different types of innovation are suitable for different phases of market development.
Three phases of disruption (Montoya & Kita 2018)
In the new market radical innovations, often created by newcomers, dominate. However, these innovations are not, in and of themselves, enough to break into the mainstream market beyond the early adopters. Instead, architectural innovations reshape the linkages between core concepts and components of the product while retaining the core concept behind it. This results in the creation of the 'dominant design'*, which pulls together all of the dispate strands into the industry-defining set of features and configuration that more or less everyone uses from then on out. In this phase, newcomers and incumbents both have a shot at stumbling onto the dominant design, although there are reasons to believe that the newcomers may be structurally better placed to do so.
However it happens, once the dominant design has emerged and adoption has crossed into the mainstream, further innovation tends to come in the form of 'efficiency innovations'. These serve to commoditize the product, driving prices down and allowing cost-conscious customers to access the product. Often, the innovation here is a business or supply-chain innovation rather than a change to the product itself. Ironically, Montoya & Kita identify this rather unglamorous phase of the innovation cycle as being the closest to Christensen's original vision of worse performance and low-end disruptive innovation.
The takeaway from all of this is that, if you want to disrupt the market, it pays to know both what phase the market is in and what sort of innovation your product or service represents. Trying to launch a low-end innovation into a undeveloped market, for instance, will probably result in the product failing to make any money. To my eyes, this seems to indicate that services like IP landscaping are a necessary part of the process of analysing a new product or service, as you need to situate it in its context.
* Recall our earlier discussion about ecosystems and niches. In this analogy, the new market is something like the opening of a new ecological niche, followed by an adaptive radiation as all the market actors try things out (recall the period of cellphone design from around 2000 to the release of the iPhone). The dominant design is the niche-filler, which out-competes other species until it controls the niche. The other species must then move to a new niche (sometimes functionally separated, sometimes geographically) in order to survive (in market terms, either move to new markets/product categories, or become me-too products which copy all of the dominant design's features). There is also an element of convergent evolution here, as the dominant designs within a given niche will tend to resemble each other by the process of convergence.
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