Probably has more to do with Naoko's publishers bumping heads with Toei than her but you never know these days. She could be the Queen Beryl at home giving orders.
I think we are gonna get something good though. The Eternal film made some profit in Japan even if it wasn't a box office smash, (which was expected anyways) it still allegedly made a decent profit by the end of its run for at least one of its films, The BR/DVD sold good as we can see (to about a million on the first week), and we need to add in the licensing deal for not one, but two movies, and the entire Crystal series on Netflix, cause I am sure Toei charged an arm and leg for all these things.
I at least speculate that we have the ONA version of Crystal because of either a mistake OR the fixed version is priced too h-a-f to license by Toei, and Netflix may not want to shell out more money just yet (just my speculation), either way, I am sure the series made the costs of production and advertising back and more, and let's not forget the figures and other merch sold or about to come out. The Eternal movies are just long commercials and there is a lot of merchandise that will be snatched up including new FigureArts and Propilcas that I know Sailor Moon collectors won't be able to resist spending money on.
And there is the potential (if the show is still doing well, which the movies have) for Netflix to pay more money possibly to be able to stream the Stars movie or series...whatever the "company" decided this time.