Post '75 the great push for Congregations to get their own K.H began, at least here in the U.K. This eventually morphed in to "Quick Builds" with RBC's.
Many who owned their own place already could easily split in to two, or even more, Congregations, others, like us, eventually got their own K.H, built by us, before RBC's and quick builds.
As the growth slowed, so did the pressure, but most Congregations have ended up with their own Hall, if shared. And now, even the K. Halls that were sweated over and paid for by the Congregants belong to the U.K Kingdom Hall Trust, so sad.
We wuz robbed.