Vinyl sales are nowadays between 300 and 1800 copies depending on how "trendy" your release is. I'd say it will take quite a few (I guess at least 20) more years before people *really* stop making new cuts. To me, vinyl is a very steady media after all, with the analog mastering and processing, the sound is often perceived as superior to the digital master.
CDR and hard drive media are changing and breaking every 3 to 5 years already from my experience. About 30% of my mp3 tracks (about 70 GB) have gone missing and / or needed re-recording since 2000.
Another thing is that the club culture is going strong as ever, so there is definetly a stream of money coming in. The key issue is, as that mnml trendy crap showed - the apparent lack of creativity among the new producers.
My guess is that most of them were "directed" by their APPLE (yes it has to be one) Powerbook to "create" their non-music.
Back in the 90s, computers were not powerful enough and the access to decent studio gear was very limited. The people who got their hands on a 909 were determined "soldiers" with a vision.
Still, I'm pretty optimistic that there is a lasting future for techno if you cut the crap out with a sharp knife. The pseudo mnml as well as the electroclash, schranz etc. will eventually fade and something "worse" will be on the frontpage...still no reason to say all is at the end.