Maybe you should check out other MIT licensed frameworks and assess whether they have fostered a closed or open community.
Rails is MIT licensed and as a result we have seen a lot of companies build their web applications on Rails and build very successful businesses, but we have also seen a range of opens source plugins/gems and applications themselves built around Rails which have resulted in a better web community.
This is 2012, developers who care about something like Meteor also care enough about open source to give back. We don't want developers to be forced to make their products open source, they should feel compelled by the enjoy of helping others.
Rails is MIT licensed and as a result we have seen a lot of companies build their web applications on Rails and build very successful businesses, but we have also seen a range of opens source plugins/gems and applications themselves built around Rails which have resulted in a better web community.
This is 2012, developers who care about something like Meteor also care enough about open source to give back. We don't want developers to be forced to make their products open source, they should feel compelled by the enjoy of helping others.