I wish the dev would focus on one game for a time. Two are clearly too much. It will be years before this game gets even close to the old version with the current development time
Damm shame
Since the only reality is "Ocean does not want to leave the game", giving that as the only possible answer, I propose you to think about the different scenarios that can occur:
Put SG on hold: would you put your most popular game, the one that grows little by little with each passing month despite the long periods of development, on hold for an indeterminate time?
Put on pause WIAB: if SG advances steadily, not as a stand alone but as part of a universe that starts in WIAB, wouldn't that make every connection or easter egg a possible major spoiler? would you play later a game where you know some of the plot beforehand? because spoilers in SG that connect directly with the main characters of WIAB would be huge spoilers?
Abandon WIAB: if you can't pause a game because the other would uncover secrets, you can only leave it unfinished, ...
Last but not least, what nobody thinks is even a possibility, abandon SG.
I also believed that the reasonable thing to do was to put something on pause, but that implies so many problems that in the end the only thing left is to abandon the less successful project.
And I insist, the only answer is the official one, Ocean is not going to abandon WIAB.