This is open source. You can run it locally, host it yourself, put it on Heroku -- whatever your heart desires. And, yes, you can always just use WordPress.com (for free, btw). And that's just out of the box; The sky's the limit if you get involved as a contributor (and you should!)

Where does this leave WordPress.org? Well, let's put it this way: There will be a lot more people building cool things on top of the WordPress.org REST API now that this project has shown what can be done (I expect that over time the REST API will accumulate all the abilities of the Jetpack API)

Does there have to be a better strategy for WordPress.org? I don't fear for a project that has already claimed 25% of the web and is growing market share faster than any other CMS.