LLM's have definitely replaced 90% of what I used to look up on a Wikipedia, simply because they integrate from so many more additional sources.
But at the same time I continue to contribute edits to Wikipedia. Because it's the source of so much data. To me, it doesn't matter if the information I contribute gets consumed on Wikipedia or consumed via LLM. Either way, it's helping people.
Wikipedia isn't going away, even if its website stops being the primary way most people get information from it.
Wikipedia gives away your creation for free. The LLM companies do not. Google is operating a loss leader and not "helping people." In fact, quite the opposite.
Search results do not have as chilling an effect as LLM-generated text, because search results are in essence links back to content (meaning human authors benefit from knowing who reads them, people discover who those human authors are, etc.), whereas it is not a thing in LLM-generated text (which may have occasional links back, but they are not complete nor always correct).
But at the same time I continue to contribute edits to Wikipedia. Because it's the source of so much data. To me, it doesn't matter if the information I contribute gets consumed on Wikipedia or consumed via LLM. Either way, it's helping people.
Wikipedia isn't going away, even if its website stops being the primary way most people get information from it.