I think this is a mistake that is often made in marketing. There have been numerous products in this category and not much revenue. A bigger company is tempted to look at this and conclude, “See. That proves there is no market.”
I would suggest the situation is actually quite different. There is a limited market for a product that is extremely tedious to use and certain to only be 98% accurate or something like that. Imagine a database system that returned the wrong results even 1% of the time. That would be a very limited market, wouldn’t it?
Maybe a better example is Google Maps. A few years ago, the results were so poor that I wouldn’t bother to use it most of the time. But today it is considerably better and people use it heavily.
I suspect we are seeing a similar thing with notation software in general. When Finale was the only real game in town, a person had to be very highly motivated to use it. But now there are better, easier to use notation products. In addition, the prominent DAWs incorporate some level of notation, so far more people are using computers to generate notation. I can’t remember the last time I went to a rehearsal and somebody pulled up a new chart that was written by hand. (Actually I can. I have a friend who will go to his grave arranging by hand. But he’s the only one I know still doing that.)
My point is that I believe there is a HUGE market if somebody can develop software that works reliably and accurately. Of course, such a program could become a real threat to copyright owners, so there could be some legal resistance to that.c
I don’t mean to minimize the scope of this work. Any of these pattern recognition processes are complex and error prone. When we use pattern recognition to identify faces, it is no big deal to miss 1 in 100. But if you do that with music, that may be enough to make the program practically useless.