Have you considered employing usage-based billing to help stop revenue leakage at your organization?

We absolutely see usage-based billing as a growing demand.

From my experience in telecom, I have found that overly focusing usage-based billing, eg minutes, data utilization, can actually cost mor than it saves. The cost of managing the billing and the complexity for the customer can ultimately cost much more than uneven utilization. And the six sigma era burned in the concept that variance is what often creates issue. If you cannot predict your spend, you will go to a provider that is.

I tend to focus billing based on customer perception of value and orient pricing around 2 or 3 factors that change tiers. For example, project management might be the number of projects and users.

It also ultimately depends on the type of product/service in question. For certain types it's really N/A and it's very relevant and easy to implement for others.