The reason Google isn't getting much backlash is because they played their cards right. They're much more discreet, their ads look like any other ad except for the tiny adsense symbol, they give the appearance of a free, open search engine etc etc. How many people know that the search suggestions don't really reflect the most popular terms? How many know that Google will go through your emails to pick up information about you? How many know that they actively derank websites, essentially deleting them off the internet, based on political choices?

It's also quite possible that people aren't aware of critisism against Google simply because Google chooses to hide it. They're that powerful right now.