Which is true... Think of it this way, your phone does social media, which doesn't work unless ypu engage. When you engage there, mote people adapts it due to community, more eyeballs for sweet ad money. These medias also grow large and relies on other services to scale and perform those ad workload so they also build or pay someone else for the resources.

In the end what you get is a good feelong in the heart that people liked that one post/photo while they got sweet ad money and someone actually bought a product and someone else made more money.

However that engagement has a cost, you are the acrobat in their circus stage, but you get no pay and while at it you also paid for that over complex device that they also sold(charged you money to give your performance).

Of course, you can nitpick all you want from my bad example, and do a lot of what-aboutism, but the point is clear I hope.