BlackBerry

For most of the 2000s, BlackBerry — made by Research In Motion — wasn't just a popular smartphone. It was the default device for anyone who needed serious, secure email on the go: executives, government officials, bankers. Its physical keyboard was famous enough that "CrackBerry" entered the language, describing how compulsively people checked it.

When the iPhone launched in 2007, RIM's early public reaction was, by several accounts, dismissive. A touchscreen-only device with no physical keyboard looked, to executives who'd built their entire product around business users who valued fast, tactile typing, like a consumer toy rather than a serious threat to their market. Co-CEO Jim Balsillie reportedly downplayed it publicly as unlikely to be a major factor in the business-focused segment BlackBerry considered its real market.

That confidence turned out to be the mistake. The iPhone wasn't just a phone with a better keyboard-free interface — it redefined what "smartphone" meant for an entire generation of users, expanding the definition from "a business tool for email" to "a general-purpose computer in your pocket," with an app ecosystem BlackBerry had no equivalent for. BlackBerry kept refining what it already had — better keyboards, better enterprise security — while the market's actual definition of the product category moved to something else entirely underneath it. By the time RIM seriously committed to touchscreens, its own attempts arrived late and were poorly received. Its global market share, once dominant, collapsed within a few years.

BlackBerry didn't lose because its product got worse. It lost because it kept winning at a version of the product category the market had already stopped competing on.