To use an analogy that works for my simple brain....
At the start of any new cycle/fashion/format - I see the rate of uptake like a pendulum. It tends to swing quite wide and fast at the start, but gradually slows down over time with the left and right extremes slowly apperaring less radical.
Occasionally it will settle to one side or the other, but more often than not it will sit towards the middle in the end.... and thats were I think/hope the survival of vinyl/physical music will sit too.
Think about "Digital media" in it's many forms, wether it be CD, MP3. Download.... or if you are a photographer JPEG, PNG etc....
Many of these digital formats do have some advantages for the modern world that we currently inhabit, and sadly nearly all these "virtual" formats are the only forms that the younger generation are familiar with.
However, we constantly spout that from a quality point of view that our familiar "analogue" vinyl just sounds better. But more importantly (in my mind) it is this physical/tangible quality that still holds out a margin of hope for an extended existence.
Whilst I do not anticipate seeing the pendulum swung far enough to the left for a mass revival of vinyl, I do like to think that its longevity to date will continue to emphasize it's physical/non-virtual qualities enough for some producers to have belief in maintaining some kind of production no matter how small...
Remember - One electro magnetic hiccup/pulse could wipe out 30 years worth of your vunerable digital media in the blink of an eye - but our beloved vinyl would still be about. ( I lost a hard drive with 8,000 MP3's that wiped out over 2 years worth of vinyl recording)
I ask myself - When 40 years after a picture was taken - or a record was pressed, and I can still see and listen to them to enjoy...... Would I be able to look at a JPEG of my kids or listen to an MP3 of Duffy and the like in 40 years......??
Hold onto your vinyl, whilst/because you can....... remember, all the virtual formats are held by someone/thing else....
Whatever format the future holds, lets hope it has both the quality and tangibility of something as long lived as vinyl....