I think the OP will find out what an “Implied Easement” means on Victorian Plans of Subdivision (strata plans).
It’s one of the quirks, if you like, of strata. At the time the strata plan is registered both the OC/BC and the lots have automatic implied easements over each other for the supply of their services.
So the other lots (and the OC/BC) will basically owe the OP nothing. They have the easement already. And if it’s not in their interests they need not change the current arrangement.
The OP, on the other hand, could pay to alter the arrangement and win back the space for their lot. That would need OC/BC approval of course.