What Is Web 3.0, Really, and What Does It Mean for Education? | EdTech Magazine:
According to O'Reilly, whose media company is credited with coining the term Web 2.0, "it was never meant as a version number." Rather, the expression "was about the return of the web after the dot-com bust," he explains. "There won't be a Web 3.0 until everybody says, 'OK, the web died again,' and we rediscover it.""
The mobile apps are now trying to do what desktop applications did during early web.
So the Web 3.0 will be a comeback of Web to mobile devices in form of "web apps".
This is likely and almost inevitable.
Now, question is why did Google select Java based platform for Android,
when they are in fact promoting web/internet usage?
Performance. JavaScript was just not fast enough a few years ago.
With ChromeOS, and intent to eventually "merge" Android and ChromeOS
Web could finally become a mainstream mobile platform.