I like the idea concept, and I think there is a pain to solve in this direction (I experience it myself). Nevertheless, who are you trying to help exactly? Companies that DO have a community and only need the platform? What about those who do not have any of both (no community, no platform)? So far (after a quick test), it doesnโt feel like you could help create a community without your client making a big effort to communicate it.
Last but not least, your design and all the features based on data look very cool, but after opening a Hub, it is too empty. Consider pre-filling a Test Hub so users can imagine how incredible it would be once they get traffic and data. All the best!