You can do something besides just trusting Google, and that is using and promoting alternate search providers. Google is approaching monopoly status in the search space because we're allowing it. With a bit love, DuckDuckGo and Bing could make dents.

I think the other problem is that search doesn't matter as much to anyone else. Yes, Microsoft made Bing, but Bing is essentially a side project for MS -- their crown jewels are Office and Windows, and everything in the company revolves around that. Just like everything MS does ultimately comes back to Office and/or Windows, everything Google does ultimately comes back to search. If a company with resources, like Amazon or Microsoft, made search a top-tier priority, they could take marketshare from the big G.

One potential move that would greatly assist Bing, for instance, would be for Microsoft to make Android phones and put Bing as the search provider instead of Google. They could team up with Amazon and use Amazon's app store. Instead of doing this, Microsoft released a totally separate platform. Why did they do that? Because Java is competition to C#. Who cares about C#? Microsoft cares, because C# (and Xbox, and...) is about keeping Windows the dominant platform for any and all software, because that's how you keep selling Windows licenses and keep Windows shipping on every PC sold. It's all about protecting their lock-in. If MS embraced Android, they may help Bing, but they'd be undermining the Windows lock-in strategy.

Every company comparable to Google has similar problems. DDG is noble but nowhere in the type of ballpark where they can realistically compete (for now).