I don't know how well iTunes tracks with music available on other streaming platforms, but when I imported my library of ~700 CDs to iTunes Match about 40% of my tracks matched, and 60% had to be uploaded, so I suspect that for me there is a lot that isn't on any platform (but is on iTunes match.) Which is why I don't subscribe to any streaming service.
How do you see the match rate? I've been using iTunes Match for years and really prefer it over services like Spotify. But I've always wondered how much of my content wasn't available on the mothership.
