If you're confused about R's data structures, please read http://adv-r.had.co.nz/Data-structures.html and let me know if it doesn't help.

And no, we're not planning on burning out. We currently sell three things:

* RStudio Server Pro. An commercial version of the open-source server version that provides stuff that corporate IT wants (e.g. monitoring, more auth options, ...)

* Shiny Server Pro. A more flexible version of the open-source shiny server that offers more configurability (e.g. number of R processes per app), and again other stuff that corporate IT wants.

* Right to use the RStudio desktop IDE to companies who don't want to use AGPL software