Just goes to show how shortsighted and, frankly, stupid the WTS is.
OK, so you've got 48% capacity. So let's compress & combine congregations so KH attendance is say 90% capacity.
So what happens? A kingdom hall with 180 chairs suddenly has congregations of 150, 160, 170 members. When visitors, family, etc. come to visit on a Sunday, it's standing room only. Those who are seated are cramped, unable to put their coat or handbag on an adjacent seat. The auditorium gets repressively stuffy from all those bodies. 20 babies start howling all at once, and there isn't room to take them anywhere.
So what happens? One or 2 per week, week after week, say "screw this!" and stay home. "Why should I drive 40 minutes each way to sit uncomfortably for 2 hours?" Maybe they listen on the phone, maybe they don't. The depressed say "no one will notice if I'm not there" and will stay home. People on the edge of fading say "now is my chance" and stay home. The 6 elders in the congregation can't shepherd 25 people each, so people slip through the cracks.
A year or 2 after compressing the congregations to double their size, KH attendance is once again at 48% capacity - only it's due to half the congregation giving up.