Option D is exactly what InternetBrands is[1]. In short they own VBulletin, a bunch of niche forums (eg Fitfreaks, a Honda Fit forum), paid listing sites (Teen Summer Camp) and buy out "medium" sites that have a predictable revenue stream that requires almost no code updates.
I interviewed there and it's pretty much an internet sweatshop, (read any Glassdoor review) and the sites run everything from LAMP to VB/Frontpage MS Access DB. They burn through employees at a quick clip and outsource everything to Romania and Mexico.