Sure, I'm happy to share more information. The three publishers of plays I've listed are all doing great work and I've enjoyed several of their productions. I wouldn't say any of them are problematic in the way they operate or the content they produce, but they're all doing different things. Audible Theatre has a focus on producing work at Minetta Lane Theatre and commissioning Audible Originals, LATW has an incredible collection of work over decades, and the BBC collection is full of classic lit adapted to a radio drama format. This market is by no means already saturated just by this alone.
My capstone focuses on bringing Broadway-level productions to audiobook format and increasing accessibility to a notoriously inaccessible level of theatre. This fills a niche in the market I briefly described above. In the grand scope of the publishing industry, three isn't a large number. For example, there are well over 100 Fantasy imprints, and those are just ones with some degree of notoriety, but new fantasy imprints are still being created. Increasing viable diversity in the marketplace is never a bad thing, especially in something as niche as audiobook play adaptations.
Also I should note that while "What is a capstone project?" does provide a good explanation of what a capstone can be in the broad sense, it was a sponsored post from York University in Canada, and you'll find most graduate programs tailor their requirements and definitions a little more specifically. My program requires students to present a business model for a new media company of our own creation, including competitive analysis, content creation, and a detailed financial model with multiple revenue streams. We're only a few weeks into the process but I'm happy to answer any more questions or clarifications.
