Completely agree with you, but good music always finds its way around copyright, you just can't find it on streaming services.
For example, if the sample's small enough to not be recognisable by algorithms, they often end up on Soundcloud with a free download via Hypeddit. Some even get away with charging money for their track with non-cleared samples via Bandcamp. Because those types of bedroom producers are almost always clueless about copyright, they often cite fair use in the description and choose a Creative Commons licence, which is not how anything works. Even some B-list celebrities that damn well know what they're doing still decide to do that when they fail to clear a sample. Soundcloud would be completely irrelevant if they did a good-enough job at enforcing copyright, so they do the bare minimum labels require of them to keep running, but that definitely kills their odds of ever competing with the likes of Spotify.
Then there's a whole "gray area" of online record pools where the audio preview and download links are hidden behind a $25/month or so paywall, so record labels can't scan it directly to even know about the infringement. Usually just listing the names of available tracks in HTML is enough to get them de-indexed from Google, but they rely on word-of-mouth anyway.
And, of course, even if all of that were to stop, you can never prevent a bunch of DJs and producers DMing each other tracks, hottest of which always end up getting shared too widely at some point and uploaded to Soulseek or something.
Meanwhile, streaming services are being flooded by unethically-trained, AI-generated music, which is actually incredibly easy to detect if streaming services actually gave enough of a fuck to do so. There is one that gives a fuck rather publicly (Deezer) and according to them, it's ~34% of everything uploaded as of a few months ago, may have passed 40% as of now.