Frustrations of captions video delivery

Hi all,

I thought it would be useful to share a video of a Paramount employee
explaining their challenges with rendering and styling of videos via
browser technology:
https://youtu.be/Z0HqYQqdErE

It's really quite frustrating to see that Web browsers are still not
conformant with each other in how to render Cues on the Web and therefore
content providers are still needing to build their own rendering
technologies to not be hit with lawsuits.

I've stopped being active around caption standards and compatibility on the
Web about 10 years ago and I'm so sad that we haven't made much progress
since then.

When will browser vendors make this a priority?

Regards,
Silvia.