This is it.
Maybe a few years ago at <$megacorp> where I work, Oracle requires, as part of their licensing, the ability to scan every machine owned by the company to make sure there is no unlicensed use of any of their software. If any offending installations were found, they would charge the company the cost of the license for every machine. So, thousands of users times $thousands per license.
Even if you had a license for a Java runtime for, say, your Oracle database instance, if that was found to be used for another purpose you'd get hit. Again, for every machine in the entire company, not just the offending one.
Needless to say, there was a huge firedrill to root out any rogue installs.