Hmm, not an economist but I have seen other studies that look at things at the firm level, so definitely should be possible. A quick search on Google and SSRN didn't turn up some studies but they seem to focus on productivity rather than revenues, not sure why. Maybe because such studies depend on the available data, however, so a lot of key information may be hidden, e.g. revenues of privately held companies which constitute a large part of the economy.