allow me to throw a tiny dash of reality on the fire...
any place that's GOOD will not for long be unknown, nor unpopular. Which means, lots of singers in rotation.
If you want a good venue, you'll have to wait your turn as much as the next person. And if they're really popular, that means singing less and less.
It's really a catch-22:
Less singers, means more times singing for the individuals, but major less money for the venue. If this continues this way, they'll cancel karaoke as it's cost prohibitive.
OR
more singers, means less times singing for the individuals... however, the venue owners love that as more people is usually much more profits. However, the complaints raise in ratio with the wait list!!!
Most people try to opt for somewhere in the middle!