Amongst the bands I've played with recently (both mostly playing pubs) one of them would have:
Tops on poles
A pair of subs
A couple of big amps to power them
a big mixer
full foldback with a foldback mix
A rack with compressors and reverbs etc.
Various lights on mounts
All instruments miced up.
The other band
Played out of amps
Shitty powered mixer into a pair of tops for vox
No foldback at all
I'm really not sure if the lack of gear of the latter band made that much difference to the audience (though how you're meant to sing without foldback is a puzzle to me)
Thinking about a new project and if it can cope with being light on gear or if it really makes a difference to the punters to have the extra stuff.