The "Family International" cult did exactly this: closed up all of their pedo-compounds that they have around the globe (except in countries that harbour this shit) and then put all of their instruction "Online." You go right to their site, or even YouTube, and you have their cults instructional and indoctrination videos.
Sick as it is, and with all of the information on "The Family" out their on the internet, there are STILL diehard followers of those nutcases. SMH.
This too, could be exactly how the WatchTower ends up. E-religion, internet based, with Conventions once a year as a money-maker.