You have a pretty good market opening right now - Crystal Reports just went to a SAP Business Objects-type model. Pentaho doesn't even have a community edition anymore.
It looks like you don't support MDX/snowflake schemas/other OLAP reporting standards, so I'm guessing you're going for the lower end of the market. So two things you should do off the bat - import data from Google Sheets (maybe offer to "unlock" the service for tweets and/or links), and offer an Excel plug-in (free up to X rows).
Also offer to charge if only to allow Bob to go to his manager and say you offer support. In corporate environments, no support is often a no go.