I saw somewhere that they will offer the remote development in the browser as a paid cloud feature.
They can also at any time make those proprietary features non-free. Perhaps when they get a large enough user base or new CEO or something like that.
You know... even for a feature like that, the plugin itself can be open source.
After all, if the remote development feature is based on a centralized server (owned by MS), the license check will be performed on that server. And if no centralized server is in play, suffice it to say, anybody sufficiently motivated could reverse-engineer the plugin, remove the license check, and go on using the feature for free.
