Well even though some have tried, this thread does resemble a discussion of acoustic vs. electronics.
FWIW, here's my blah-blah-blah.
First back to the question: No - even though Roland has the highest sales of any drum set manufacturer - acoustics are not dying and being replaced by electronic drum kits. That's not to say electronic drum kits are unpopular and I refer again to Roland's position in the drum world.
The obvious: Electronic drum kit sales/use is driven primarily by volume challenged situations. Churches (big time), apartment/condo/dorm dwellers, parents that want to relax when they get home from work, Top 40 or other popular music bands that play venues requiring light to ridiculous volume levels, music school labs, etc. The key concept for this demographic is volume control. Sometimes it's because of the technique of the typical player showing up in these circumstances. Sometimes because the venue is attempting something musically foolish (i.e. where you can hear the pads over the drum sounds, trying play metal at 70 db, etc). Sometimes it's out of ignorance. But sometimes it's because of all of the possible solutions, this is the best musical choice they can make with the resources they have. FWIW, I consider the house sound and soundman to be a resource. Both may be great or woefully lacking and that affects drummers of acoustic or e-drum kits big time
The other: Some electronic drum kit sales are driven by those that just dig being able to get a pre-recorded, pre-EQ'd, ready-to-go sound. I would venture to say that this demographic includes younger and/or inexperienced players, hobbyists that just like to jam along with tunes and like one poster said (sadly in this case) not wanting the "joy" of tuning. I would add to the latter statement that this kind of player has little interest in exploring, learning and practicing all of the subtleties of sound produced by playing drums and cymbals in a myriad of ways. Their tastes run with well recorded, focused drum sounds. Electronic drum kits are a quick, effective solution for that type of player and - the music they gravitate towards.
The smallest demographic are those trying to do something creative and different with e-drums. They are there but just in small numbers.
IMHO, the acoustic kit is alive and will stay alive and well. The sales of electronic drums show the e-drums are not going anywhere yet. Kind of a stale mate if you need to measure survival.
Now - opportunities to play live acoustic drums may be reduced because,frankly , live music opportunities have decreased. Not as many full size stages or music based venues.
What I'll throw out is that I'm looking to different approaches on acoustic drums as being the best outlet for my creativity and expression. I own an SPD-S and a Korg Wavedrum. I can be expressive and creative with those as well. But I can't get 20-30 different timbres of rimshots on the fly, in performance from either of those or even a Roland TD-30. I can record Emerill Lagasse saying "BAM!" and use it as a sampled backbeat. I can play my Wavedrum through a compressor, chorus or looper and get some great sounds and performances. Can't do that with acoustic drums. I can play with a RhythmTech Stickball on a drumstick playing the rim of a floor tom and a Firth Heritage brush in my left hand digging in deadstick style on a snare for a back beat.
To answer the original question in a different way: I do not see electronic drum sets replacing acoustic drum sets in a comprehensive way. It may be difficult to see that in the paradigm each person has from what they are experiencing.