For me, iTunes Match has always worked flawlessly. I set a CD in my drive, it imports it, and then iTunes Match has the music on my devices relatively quickly. With iTunes Radio, well, that, too, has always worked well for me. I hit play, and it plays music.
I am not entirely certain what issues others are facing, or what precisely they are looking for, but the services work.
(As far as the new streaming service is concerned, it will feature everything that Spotify, Pandora, Tidal, etc. offer. Not some of the more gimmicky things, perhaps, but the core will be exactly what one has come to expect from a streaming service. Offline playback. Curated playlists based on mood, genre, etc. Radio. All that jazz. Nothing less. No one would bring a streaming service to an already crowded market without having all their bases covered. Student pricing, and family subs, however, are an unknown. I'd almost guarantee that they have these, or, at the very least, will introduce them sooner rather than later. Where Apple's strength truly lies is in their ability to engrain the services within iTunes and Siri.)
I agree with a poster who spoke to the prevalence of an iTunes streaming service, in that it will become the de facto service for many due simply to it being deeply entrenched in the OS. I personally use Apple Maps anywhere I go, because, again, it has always worked perfectly for me, and can be utilized via Siri.