I could be wrong, but I think they took precautions to prevent downloads. (Whether those precautions worked, I don't know.)
I believe this because I sent them an email telling them I had "downloaded" the show because I so much enjoyed the streamed production. I wanted them to know they had made some money off the free presentation. What I meant by "download" was that I went to iTunes and downloaded the OCR, not that I had downloaded the stream.
But I immediately got a polite but concerned email from somebody with the production asking how the hell I had captured the stream. S/he seemed quite perturbed.
I explained my poor choice of words and that ended the matter.