And thank god for that, otherwise we'd still need to support flash to use most popular websites.
WebAssembly exists as a replacement now, too.
DRM isn't going away.
The media ecosystem is not going to be enhanced by making DRM more restrictive. Netflix could completely deactivate all DRM today, and it would change nothing.
Apple completely abandoned their "FairPlay" iTunes music DRM because it became evident that it was not needed.
DRM is mostly security theater anyway. Until a few years ago, the Spotify client just left unencrypted mp3s cached locally. And they stopped DRMing music over a decade ago. People are willing to pay a reasonable price for first party content.
If a company insist on DRM, then they should be on their own.
If we make it too easy, then they will just use it everywhere.
And five years isn't "fairly recent".
One would also note Spotify is a failing business, and it was failing even harder then.
The majority of users had no idea and it didn't affect them at all. Nor is there any evidence that it had any impact on Spotify's business.