The market for selling goods in real time online is relatively small, but a number of start-ups and big tech names are betting American consumers will catch on.
Star sellers can amass huge followings and eye-popping fortunes, through a format that mixes consumerism and entertainment. But competition is fierce, and the government is watching.
Mr. Lee, 43, the chief product officer at the cryptocurrency start-up MobileCoin, was the victim in a fatal stabbing on a city street early Tuesday, his family said on social media.