A few weeks ago I shot a stage musical, using 7 cameras, with 6 fixed and me operating the close-up cam (a lot cheaper than 7 camera operators!)
The show was Disney Beauty and the Beast, and the company had a licence from Disney to record the show for cast and crew only.    This included quite a few "young" people, and I was a little surprised when the final tally was 66 DVDs and 8 Blu-rays.
I expected far more Blu-rays.  How does your experience compare?
One factor I think is that whenever I tell people about Blu-rays, they are almost always surprised to hear that Blu-ray players, costing less than $100, will also play DVDs and CDs.   They didn't know this!      Whoever was responsible for launching or publicising the product seems to have missed out this fact!