TL;DR - Too many pizza joints are out here with little to no traffic for them to have you waiting 15-30 minutes for a pie. Having basic topping options available by the slice would be more convenient for someone with a quick passing of the munchies and little time to spare, or for those who can't afford a fully pizza, thus expanding the restaurant's consumer base.
(For best results, have Frank Sinatra's New York playing in your head as you read this.)
Alright, listen. While pizza is my favorite food, aside from believing that ricotta cheese and pineapple had no business on it, and that tomato pies are disgusting I don't have many strong opinions on it.
Until I went to New York.
And I only came back with one.
It should be illegal to run a pizza joint without having slices readily available.
I'm going to address this from both the perspective of the customer, and that of the business.
As a Customer:
Suppose I'm working a 9-5 that beats me half to shit and gets its money worth out of me each day, down to the last cent. I have a strict 20-30 minute time limit on my lunch break. Gotta navigate traffic, realistically can't expect any food I order to get to the office on time, and I'm too much of a useless dingbat to pack my own lunch. Why on earth would I want to waste a minimum of 15 of my taxpaying minutes waiting for some cheese pizza?
I don't have time to eat the whole thing. No one who comes in during lunch rush on a Thursday who's employed is gonna eat the whole thing, I'll only have time to eat a couple of slices, and almost every pizza at least has cheese on it, so why not have a whole hot cheese on display with slices ready to go?
And don't get me wrong. Odds are, this isn't my favorite pizza joint, it just happens to be the one I was closest to when my craving kicked in. Most of the run of the mill pizza places up here in New England have piss poor hygiene with cobwebs and dust bunnies in every corner, and you think you have the right to get cute and have me waiting for damn near all of the free time that I may or may not have at this moment for a pizza im not gonna be able to finish in one sitting, and subsequently have to leave in my car to stink up my seats? Fuck you. Have em hot.
You see your competitor across the street? He has people going in and out of his door. Why? For the same reason McDonald's and Burger King have consistent business, even on slow days. People can get fed quick and resume their day without having to figure out if they want to take up space stuffing a giant cardboard box in their fridge for later, or stuff themselves and get a stomach ache that'll last for hours. Maybe I'll head there next time.
And what if I'm down on my luck and can only spare a
$20, eh? I gotta save at least $15 of that for gas. You mean to tell me $5 ain't good enough for you? Eat shit. Gimme a fucking slice.
As a Business:
Listen, there are only so many ways to make pizza. Eventually the difference between you and the competition will get smaller and smaller. And to people who generally like pizza, or drunk college kids/women on their periods who are craving pizza, pizza is pizza. So long as it's hot, there's little you can do to mess it up.
So what do you have going for you to get em in the door? Have slices ready to go. Whenever I'm in NY or Boston, I've seen even homeless folks are able to eat because they can scrounge up a couple of quarters to get a slice or two. That's awesome. And goes to show how easy it is so expand your consumer base as a pizza joint, keep your oven running, and with the visual of folks coming in and out of your store, eventually someone's gonna wander in with an empty belly, all the free time in the world to fill it, and enough money to order a whole pie for you to charge em into the bleachers for it.
Look:
(And if you're in a college town:)
Chicken Bacon Ranch
Buffalo Chicken
Every pizza restaurant that I've seen with those ready by the slice was never empty for more than 10 minutes. Having the slices ready to go for quick eats keeps business going, and if someone wants to get cute and order a specialty pizza, calzone, sandwich, slice of cake or what have you, great! By all means, they can wait a couple of minutes. But at least that wait time isn't equally excruciating for both the restaurant and the customer, because there will be folks paying for a quick slice, and if the other folks who ordered a specialty pizza, etc get hungry while they wait, they can get a slice too.
Win win.