freebfrost said:
If out of 2 million D&D gamers (year 2000 numbers I believe) there are only 500 of us that devoted to the game who are outraged (0.025 % of the population), that's a loss of $3m a year. If they price at $10 a month, you'd need to attract 25,000 subscribers. Of course if they charge $30 a month, they'd only need 10,000 new subscribers.
If Wizards can't match the 50,000 subscribers Paizo had on Dungeon, I will be flatly amazed (assuming DragOnline isn't horrendously buggy). The scale of Wizards' operations is massively greater than Paizo's, especially if DragOnline ends up covering all of Wizards' d20-based RPGs and minis games.
Besides which, how in the world do you buy $6000 of D&D material?!

Unless you're buying complete sets of D&D minis direct from the source - in which case you'd best up that 2m figure (and, judging from the way Paizo treated the miniatures game, drop the % outraged). Even then I'm not sure how you'd manage it!
If you assume 4 books at $30 apiece every month (which seems like too many), that's $1,400, tops - less if you bought any on Amazon or on sale at the FLGS or with a local retailer discount card or in any other way below market price. The only complete set of D&D minis I see on Ebay right now is going for $250; they release, what, four of those a year? So maybe you could get a little over $2000 (although the $1000 spent on minis wouldn't go directly to Wizards).
If you drop your figure to a more reasonable(?) $2000, Wizards would only have to have 16,000 subscribers at the more reasonable, and IMO more likely, $5/month rate to make up for 'losing' your theoretical 500 big-spending rebels. 8,000 at $10/month.