If you look at the recent history of the Blogger platform it seems that it is gradually being abandoned by Google. There have been few updates to it recently, the mobile app was withdrawn and the amount of spam comments getting through the filters is increasing. Blogger is now so far behind the curve it is hard to see how it fits into Google's current strategy.
The key to this for Google will be how much ad revenue Blogger.com pages produce vs the cost of running the service. It may be that policing a free blogging service is just too much hassle.
There are a few possible scenarios for the future of Blogger:
- The service gets a major overhaul to bring it into line with what Wordpress.com is doing in terms of functionality and usability.
- The creation of new blogs gets suspended while old ones continue to be viewable or usable for a while. There will then be an announcement of closure and a campaign to retain all of the content.
- Things just continue as they are, but I can't see that happening while so few people are actually using Blogger as a proper blogging platform. Serious bloggers switched to Wordpress a long time ago and Blogger seems full of spammy sites.