I was pleased at first when I tried to use ChatGPT as a search engine. I asked something like "give me the top 5 blog posts to learn about C++ metaprogramming" and it actually spit out extremely plausible titles from top people (e.g. Dave Abrahams, Eric Niebler, Herb Sutter, etc), but when I said "no please give me the actual URLs", they were all 404.

If Microsoft somehow is able to implement the information synthesis (e.g. "give me an example of C++ metaprogramming, using Boost Hana") with actual indexed links from sources, that would probably be the one thing I'd see in the near-ish term that could upset the search engine balance of power.