[xurukefi]

While that sounds reasonable, is there any evidence that this is the actual reason? Widevine is also used by other ubiquitous services such as Netflix, Prime, Hulu, etc.. and yet WV still remains an insurmountable barrier for most people, even in its weakest form (L3).

[Klaus23]

Good points. The difference is that on streaming sites, L3 widevine will only allow low resolution playback. They are also tied to a paid account, making it much more difficult/risky to download content. Even if the encryption is broken, there are often ways to detect such users for a limited time.

For professional content, there is simply not much demand to develop a user-friendly way to break L3 widevine, as the market is already served by reasonably convenient illegal streaming sites and torrents that allow for higher quality video.