That one was a rare exception, good, though not excellent and a limited market outside its own territory.. The popular music here is generally bad, with a few high quality exceptions like The Saturday Tea.
The theatrical scene here is largely pedestrian, pre-Osborne even, and though there are some good opera performers, opera here only really works at its best when it's a co-production supervised outside Poland. Almost always with Cardiff and Brussels for the obvious reason. There will be more of that in the future, however I don't see vast changes in the next couple of decades.
I don't think either (unless a new Kieslowski or Holland comes along) will ever be anything Poland is noted for. Tulia is liekd here, however has very limited export potential.
Scientific research and education, especially if isolated from free-market economics, is a a possible area for the future.
Film locations are something we'll see more of; there are already Bollywood films that are partly shot here, since with a bit of dressing locations can look like almost anywhere in Europe, and of course there's the infrastructure in Lodz. It might not be the next Vancouver, however there's some money to be made.