That’s not how advertising work. Most of the time, the goal is to create/increase brand awareness, then when you have to buy something you will consider these brands, possibly in a more favorable way.
If I'm aware a brand is wasting money to make me waste my time, money that furthermore will affect their product prices, you can be sure I'm never buying anything from this brand unless there is no alternatives (in which case they don't need awareness)
The best examples are the subscriptions advertised on podcasts, which are invariably venture backed and remarkably shitty. How are the hosts so excited to get their memtal health records leaked!? (€£¥$)