The lack of general availability here and a home video push-back are apples and oranges. The presence or lack of streaming/theatrical will have no impact on our home video releasing timing; the only hold-back appears to be that of the dub for the U.S. release, which itself may be independently subject to its own theatrical hold-backs.But the difference is that the US have had two options as stop-gaps until the physical release - Crunchyroll and a limited theatrical release. Meanwhile, in the UK, we've yet to have any official access to the first, of three so far, movie.
I think it would be neat if Manga Entertainment could arrange even a limited theatrical run though, or if they have streaming rights too, perhaps build a bridge with Crunchyroll and give us access for a limited time? (Say, the day of its original release date until New Year?).