Yes, this. Unfortunately the general public has stopped looking elsewhere to discover things, and if you're not on Facebook you're going to take a huge hit. Hell, people don't even look left and right when they drive around town anymore, they just have Google route them to their destination that they discovered on Facebook, or get an Uber driver to take them there as they spend the ride staring down at their phone looking on Facebook for destinations for the next time.

Similarly in China if you're not on WeChat your business is effectively dead.

I very much also disagree with this monopolization over peoples' lives but its starting to become a worldwide phenomenon on at least a per-country basis.