That one bit of data is indeed anecdotal, however the creators of the survey state that people are behaving much like his single sample indicated.



From the in-depth explanation of how the survey is made ...



" It’s from those two places [User Filled out forms] that we made The Orr Group Industry Report. Self-reported use of the Roll20 system. In the report we state we worked from a sample size of 25,000 games and 15,000 players– each one of those campaigns and players were active during Quarter 3, thus being included. That said, many, many users don’t select what games they are playing– in the last 24 hours, for example, over 6,000 games accessed and the vast majority of those have not selected what is being played. Additionally, a Game Master is more likely to indicate what campaign they’re starting than a player is likely to alter their profile as it has no effect on the player simply being able to join the Game Master’s session."



Source:

http://blog.roll20.net/post/100246471625/what-is-the-orr-group-industry-report-and-what