Which do you think is more important? Putting man on the moon or ecommerce? I reckon you been able to get on a device, see a biscuit ads, order one from foo.com and have it shipped to you. Think of how much tech it takes for that to happen, that is more tech than NASA built to send many to the moon, the internet, packet switching, routing, fiber optic, distributed systems, web servers, web browsers, ads, cryptography, banking online, and so on and so forth. We love to trivialize what is common, but that clicking on an ad is not an easy problem. Clicking on ads has generated enormous wealth in the world which is now bootstrapping AGI.
Clicking on ads helped with our goal to AI today. Showing you the right ad and beating those trying to game it is machine learning heavy. When was the first time we started seeing spelling correction and next word suggestions? It was in google search bar. To serve the correct ads and deal with spam? heavy NLP algorithms. If you stop and think of it, we can drop a think line from the current state of LLMs to these ads click you are talking about.