What is big-bang disruption?
Big-bang disruption is a new offer that arrives both better and cheaper than what incumbents sell, so buyers across the market switch at almost the same time. Larry Downes and Paul Nunes named it in a 2013 Harvard Business Review article. In Clayton Christensen's model, the newcomer begins with a weaker product and improves over years. A big-bang disruptor skips that climb, which leaves incumbents little time to respond.
Why it matters to a revenue leader
Big-bang disruption is easier to spot in products than in field services, yet parts of the sales motion may now face it. Software that drafts proposals or researches accounts at little cost can change what a buyer expects from a seller. A revenue leader should ask which tasks a buyer could soon get better and cheaper elsewhere, and move sellers toward the work that still needs a person on site.
Example
A building inspection firm earns steady fees for producing standard compliance reports by hand. A low-cost tool appears that drafts the same reports from site photos in minutes, with fewer errors. Within a year, customers ask for lower fees on the report work and pay a premium only for the site visit and expert sign-off.
"Which part of what we sell could a buyer get better and cheaper elsewhere within a year?"