The success of GW's various games hasn't given it a license to print money, but once the company captured a critical mass of attention* it's quite possible it did gain a set of very powerful tools for keeping the money flowing. Thanks to the responses to certain events over the past few years we've probably all got a better idea of what they might be.
* I'm thinking especially of the UK in the early days and the benefits of importing D&D, opening shops in so many towns and having White Dwarf in newsagents large and small, especially as WD moved towards coverage of GW exclusively, and of course creating one or maybe two major settings and several major systems amid a whole constellation of smaller. It's worth bearing in mind that a tabletop game producer can't sell one key piece of the puzzle - fellow players, who have to be numerous enough to make play worthwhile.
Once the interest was there, and assuming the interested parties had their own income or the income of parents or others to fund it, transfers of cash could well have been regulated by a set of general processes I'm going to call elaboration, recodification and devaluation in the case of three primary, and rotation in the case of a secondary.






