The other thing to think about, from WOTC point of view is - how long can it's current increased popularity last?
Yes, right now Stranger Things is 'hot'. It has 1 season left. Odds are, we won't see much D&D next season (since the city was just trashed and we left off with the two uber-psions having a transdimensional staredown). The movie can only do so much.
So, that leaves them with the 'Core fans', as is where.
Another way to put it - how many people did you play D&D in school with, that still play? Or that you have played with in the past, that still can/would/do?
For me, about 30 in Grade school, 15 in high school (different from Grade school), and we'll say 20 in College and post. About 65.
(And I'm in contact with 45 of them via Facebook)
Of those, 7 are still playing. That's counting my wife and me. So less then 10 percent.
WOTC needs to understand is this; in a few years, without Stranger Things and similar driving casual player interest, what's left?
That 10%. The majority of are current pissed off at them.