COMPARISON
One borrows an audience. The other builds one. Most marketing is renting because creating requires something that cannot be outsourced: a point of view worth owning.
Renting and creating are not mutually exclusive. The businesses that win use renting to fund creating. They run ads to build their email list. They sponsor content to drive newsletter subscriptions. They use borrowed audiences as a bridge to owned ones.
The mistake is renting forever. The businesses that never invest in creating their own assets are perpetually dependent on platforms they do not control, audiences they do not own, and costs that only increase. That is not a strategy. That is a subscription to someone else's business model.