There are plenty of businesses like show business.
Professor McGonagall hated doing career consultations for fifth years. Most of them had no idea what they wanted to do yet, and the rest didn't care. Sure she'd get the occasional Healer or Auror or something of that sort, but for the most part, she and the student would just go around in circles until McGonagall finally just signed them up for the core classes.
McGonagall looked at her list. Next in line: James Potter. McGonagall sighed. This should at least be interesting.
Just then the door burst open and James sauntered inside. "Hi, Minnie!"
"Good afternoon, Mr. Potter. Please, have a seat." She tried not to laugh as he bounced across the room and into his chair. "Now, Mr. Potter, I trust you know why you're here today?"
"If it's about the condom full of Goldfish crackers hanging from the flagpole, I can explain..."
McGinagall blinked in surprise. "Well, that...um..."
James laughed. "Kidding!"
McGonagall shook her head. "Anyway. This is about your future career. Have you –"
"Say no more, Minnie!" James interrupted. "I know exactly what I want to do when I grow up!"
McGonagall sighed happily. Finally, someone with some direction! "That's wonderful, Mr. Potter!" she exclaimed. "Now, what exactly would you like to do?"
"I want to be –," he stood up dramatically, "on Broadway!" James gave his professor his best jazz hands.
McGonagall felt like banging her head on her desk. "Really, Mr. Potter, take this consultation seriously!"
"But I am, Minnie!" he replied, stomping his foot. "Can't you just see it? Dramatic lighting, singing and dancing, millions of adoring fans throwing roses at my feet as I take a bow, Lily Evans running up on stage and the crowd cheering as I sweep her off her feet..." James stared off into space, a dreamy look in his eyes. McGonagall cleared her throat loudly and James snapped out of his Broadway daydream.
"Mr. Potter," she said angrily, "you may come back when you have given your career some serious consideration!"
"But I have, Minnie!" James insisted. "After all, there's no business like show business."