Ultrafast delivery services are moving into New York City, betting that residents and visitors to the city will pay to get goods brought to their doors. “When Amazon came out with two-day Prime [delivery], that was the most revolutionary thing,” said Yakir Gola, co-founder and co-CEO of Gopuff. “Now, people want it in 20 minutes. In 10 years, people are going to want it in five, 10 minutes. At the end of the day, people value time, so you have to keep innovating.”