I believe the first company to create a very successful cloud based DAW will have the greatest opportunity to vacuum up this data. If producers were pushing real original music source data into your neural network, you basically eliminate the need to do any sort of waveform analysis. Everything turns into discrete numbers, which neural networks are really good at managing vs. the destructive noise of common music files. (120BPM music could conceivably be 2 inputs per second vs. 44100)

Edit: As a matter of fact, you don't even need a whole DAW, really. You just need to be able to read existing DAW files and give users a reason to upload them.