Until recently, many people were unaware of what exactly a "blog" was or even what it may contain. Our former experience with the Web consisted of typing in a set URL and seeing (most likely) a company's Web Page with specific content and tabs to navigate. I believe that the mainstreaming of social networking sites is how more people became aware of personal sites or what we now consider blogs. Although blogs and web pages can both be found in web searches or queries and offer specific content, they both have apparent similarities and differences.
Blogs and web pages both offer content, customized features, navigation, and search functions. They both can offer public search and also private or "subscription only" access if needed. Both can also be "hosted" by a larger content system, yet offer a customized URL for the creator. They can also both have colorful graphics and easy navigation tools built in. The differences really only become apparent in the small details. A blog is usually only maintained by one person or possibly a small group of people, whereas a web page can be used by an individuals, companies, special interest groups, or corporations. A web page is usually designed to look as if it is continually displaying static content with navigation throughout by a search bar, tabs, links, graphic buttons, or key words. In contrast, a blog is usually laid out in a series of "posts" which are arranged usually by newest or most recent date and navigated to from the side bar by date, month, or year. Most blogs are cleaner or simpler in appearance because the owner is focused more on content than appearance.
In conclusion, there are a few small differences and many similarities between blogs and web pages. As more content continues to become available on the Web and more people become aware of their options for sharing content, I believe it will be become harder to spot any differences between blogs and web pages.