If you ask me, I think the main reason for the loss of deleted scenes in most projects is due to the shift toward streaming. Deleted scenes used to be a way to market DVD sales and make more money on the project.

Nowadays, if they were to put those deleted scenes on the extras tab of a streaming service, it would only serve to fuel controversy on what could have been. They have nothing to gain from providing them to us, they only lose. I think the only way we should expect to see them in the future is if a director personally pushes for it.

Which is a shame. Would have loved to see all the deleted scenes for TROS.