I recall some commentator on a a radio/podcast show asserting that Temu's immediate offerings are really more of a beachhead or gateway-drug, and the real money is in something else the parent-company (Pinduoduo) is already doing in China, a certain kind hybrid social-media plus shopping mix that isn't as common in the US.
I find myself thinking of the business model satirized in The Truman Show, except updated for ~25 years of mobile/streaming advancements: "You liked this video! Click here to insta-buy the same jacket the performer is wearing! Your friend bought X, don't be left out!"