Basecamp is project-oriented, and the changes it brings to a company that adopts it are substantial.
Vostorq is focused on one main task - giving important conversations a dedicated place. By doing that, people may solve a lot of different problems and potentially use Vostorq instead of plenty of other tools. But it's not expected to be the only tool you use - it can be the one, or it can be one of many. I understand this brings less potential value, but it also gives more flexibility and lower adoption costs.