I don't think spam is an unsolvable problem. I think Google didn't want to solve it. I could find whole networks of spam sites in minutes, they could too. But t

I don't think spam is an unsolvable problem. I think Google didn't want to solve it. I could find whole networks of spam sites in minutes, they could too. But the web is larger than what can be fixed manually. They should make an AI bot to search through the search box and decide if the results are crap, and train it with human preferences. Or set the bot to find difficult to find answers and see how many it finds and how high they are ranked. Probably working in search at Google was a dead end career, the search department wasn't sexy anymore and didn't have green field projects. Maybe they were just afraid to change anything as long as it makes money for them. So the good people left and they have been coasting for a decade.