It's no secret that Google uses AdWords to promote its products. If you search for "blogger" you'll have a surprise (for "blog" the situation is similar). Basically, there's a very slim chance someone will go to other site than blogger.com. Why?
1. There's an ad for blogger.com at the top.
2. Google recommends you to try Blogger (you'll see the same tip for almost any keyword that contains "blog"; that includes: "blogs", "blogosphere", "weblog", "bloglines").
3. The first result is for blogger.com and there are also four more pages displayed next to the result.
4. The second search result is still for blogger.com.
So, basically, the first eight relevant links from the page send you to blogger.com.