You can sit down and recolor the movie frame by frame and release it on torrent yourself, it'll make many people happy. It won't be worth it monetarily but since you're annoyed it doesn't exist and money isn't a factor...
It's always easy to complain about others not being generous enough with their time, but we always have an excuse for why we won't do it ourselves.
I'm this particular instance though it's not really about time, it's studios not wanting to pay what I imagine would be a relatively small amount to do the conversion. It's not going to be a frame-by-frame laborious process.
> You can sit down and recolor the movie frame by frame and release it on torrent yourself, it'll make many people happy.
You can't, at least not if you want an acceptable result.
In photography, if you have a JPEG photo only, you can't do post-facto adjustments of the white balance, for that you need RAW - too much information has been lost during compression.
For movies it's just the same. To achieve something that actually looks good with a LUT (that's the fancy way for re-coloring, aka color grading), you need access to the uncompressed scans, as early in the processing pipeline as you can get (i.e. before any kind of filter is applied).
You can't do that since besides time you also need knowledge/skill. So the final difference could be between "an extra 1% of the budget" at a corporate level vs "and extra 10% of your life to become a professional and fix a video, and also break the law in the process". Pretty easy to see how it's not just "an excuse", but a bit more fundamental issue