Google is utterly massive, and companies that get that big tend to never fully die. Like large countries and other entrenched institutions, they can decline, but it's a long way down to zero. As such, Google will likely exist in some form for the rest of our lives, just like IBM and GE will.

Also keep in mind that ChatGPT in its current form hasn't been fully productized. Just like Google search was excellent when what it provided was in line with user needs and now only provides the absolute minimum value to get as much ad money as it can, so too are LLMs in that phase. There's nothing stopping LLM-driven services from returning the same kind of results based on whatever topic is being queried about. In fact, that's exactly what companies like MS want to do with it. None of the large companies pouring billions into this space have a goal of making society at large better informed. They want LLMs integrated into their services so they can deliver a new level of targeting for ads, reduce customer support costs, shape narratives, automate PR, and attract users to platforms that can then be marketed to their real customers (other businesses and governments mainly). Those of us envisioning idyllic futures that this tech will unlock need only look at every other technical advancement in recent history to see how it will end up.