TikTok as not only a data collection and ad delivery vehicle, but also a top of funnel to push users towards other products. Build the best product on the market, grow the user base aggressively to create a direct relationship with the network of users, and then use that network to launch new products. Facebook is a classic example of this with both Instagram and Messenger. Google has done the same with Search, YouTube, Email, etc; and compounded that with Android.