I truly believe yes. You can make money on HubPages without having a blog of your own. With use of cleverly positioned and utilised backlinks, keyword research and good content hubs can do very well for themselves purely through search engine traffic alone. ie. by the nature of their title and content.
It can't hurt to use social media or other networking methods to share your hubs around; like facebook, or pinterest, but if you are not into these it does not mean that you cannot succeed.