I’ll give you a typical example where Google could be great but falls so short: I deliver to it on a silver platter a search query for a specific product “MRCOOL DIY 4th Gen 12k btu”. This is a very specific ductless mini split heat pump that retails for about $1750. I was looking to see if anyone had a cheaper price. Well Google Shopping mostly showed me results for either the 3rd Gen or a different BTU rating, in an apparent attempt to not show too few results. No a 36k btu unit isn’t a substitute. No, just the air handler isn’t a substitute. I have my credit card out and ready to go, buy Google is too busy showing me ads for window units!
You know where I found my answer? Eventually I gave up on Google and went to the manufacturer’s website, looked through the list of authorized dealers and saw that Costco was on the list. I then looked there directly and found the unit at $300 cheaper than elsewhere. Bad search engine, no cookie!