You don't actually need to click on an ad or purchase something from an ad site in order for Facebook to make money selling ad space.
The moment these ads are loaded on the page, real time auction occurs, where advertisers place bids algorithmically and automatically, based on your profile. Facebook makes it's money by selling this ad space. It doesn't particularly care whether you click on them or not. But if they don't load in the first place, there's nothing for Facebook to sell.
The real insideous part is that advertisers don't need to actually bid on the auction to participate, and anyone participating gets to havest your ad profile. This is one of the big ways data brokers are able to build profiles on you. They can then do whatever they want with this info, and you'd probably never know.
The moment these ads are loaded on the page, real time auction occurs, where advertisers place bids algorithmically and automatically, based on your profile. Facebook makes it's money by selling this ad space. It doesn't particularly care whether you click on them or not. But if they don't load in the first place, there's nothing for Facebook to sell.
The real insideous part is that advertisers don't need to actually bid on the auction to participate, and anyone participating gets to havest your ad profile. This is one of the big ways data brokers are able to build profiles on you. They can then do whatever they want with this info, and you'd probably never know.