There are tons of reasons that many gambling platform developers and even the other users might find such games a bad visualization of dice games just for an online gambling. Things must be considered:

1. Doing it requires more data of sending and receiving, for it to be viewed and/or(if they made it a video then randomized it playing)
2. It is too old-ish for a UI in a constantly changing UI/UX design preference in many platforms -- including gambling.
3. And, if it would be done using only CSS and some animation through coding, it would take months just to fully flourish its animation to be smooth and not look ugly.

Yolodice, that focused also on dice games, never tried to do it yet still run to be a successful platform. Even in years of trying many gambling platforms, I found no one that tried and kept such visualization in dice games.