And yet we run the risk of creating multiple competing social silos with SMTs. Single shared token is a solid foundation for achieving combined network effect across multiple communities.
Steem is a great foundation for new businesses, new products and services. At first, we are matching functionality of existing closed social systems, but as rapid permissionless innovation continues, it will bring forward previously unimaginable things and qualities which will set it apart from all of the current-day competition.
The risk for silos is not really a risk as itessentially already happens. What is possible is that those siloed can still be successful in their own right by leveraging the Steem blockchain. If you consider that an SMT might service a language or topic group, it could be very interesting. Some SMTs will be used just to track product movement perhaps, who knows.
It is going to be very interesting who and how they populate the token economy.