It also kicked off a mania of British bicycle manufacturers that went public, posted soaring stock prices and then collapsed. What was left behind, Quinn said, were people and companies that, in some cases, helped usher in new innovations in cars, motorcycles and road tires. Some of the bicycle pioneers are still around. Like the bicycle bubble, good things happened in the wake of the late 1990s dot-com bubble in the United States. Companies including Amazon survived and thrived. Bankrupt telecommunications companies left behind cheap and useful internet pipelines that enabled an online explosion. More recently, a cryptocurrency collapse several years ago got more people curious about the benefits of the promising underlying technology, such as the blockchain. “The bubble mania can be distracting,” Griffith said, but she added: “The perspective of a lot of people in tech and finance is that a mania or a frenzy drives attention, excitement, enthusiasm and talent to something new.”