Still plenty of Blu rays being sold iirc. Obviously theres been a decline due to online services but I'd imagine it's similar to the CD/Vinyl lovers, as there will always be people who prefer the physical media over streaming.
Personally, I own around 2,000 Blu rays and am in the process of updating around 1,000 of my DVDs (including Twin Town actually) to Blu ray. I buy around 5 or 6 a month and the list is always growing.
**edit**
There's nowt like receiving something like this in the post. You don't get that buzz just pressing play on Netflix...