But yeah, coming back to the original point, the other kids, especially Augustus Gloop and Veruca Salt, cheated the system by claiming a ridiculous amount of chocolate bars. News reports mention people hoarding Wonka chocolate bars in hopes of finding the Golden Ticket. Mr Salt even admits that he refitted his staff at a nut-shelling factory for opening chocolate bars, without a doubt losing a huge amount of capital in lost profits and mass bulk-buying of chocolate, just to win. The working-class lady who actually found that ticket didn’t benefit from that luck or labour - she was immediately made to hand it over to her boss for his spoiled daughter, who holds it as ‘his’ victory and good luck.
Charlie didn’t even find the ticket in his first bar, or his second. His first bar, his birthday present, was a dud, and he even failed to enjoy it like normal because he dared to hope, just for a moment, that he might actually be lucky enough to get the one. Later, he is lucky enough to find a dropped 50p piece in the street, and goes to buy a chocolate bar for himself. Finally holding a treat that is all his, he wolfs the thing down, stopping only long enough to realises that he didn’t get lucky and win a Golden Ticket. It’s only on the third bar that he gets it, and, smelling blood in the water, the shopkeeper tells him to immediately go home and not tell a soul that he has it, knowing what people might do to this small starving boy if they find out what he has.
And Wonka knows! He knows he done goofed! He realises almost immediately that the people who have been attracted to his lottery, who have stacked the decks in their favour, are awful, cruel, entitled people! Augustus Gloop, the glutton, doesn’t care what placed in front of him so long as it’s food - and the first obstacle? A room where everything is a kind of sweet. Violet’s gum-chewing is excessive, but the modern film adapts this into a more realistic and sinister flaw - overcompetitiveness. It’s not just that she’s been chewing the same piece of gum for months, it’s that she’s been chewing the same piece of gum, weeks after its taste is gone, whether it is socially acceptable or not, just to break a record. So when Wonka promises a new treat, a personal favourite of one of the kids, but says it’s not ready yet and you can’t have it, of course Violet seizes it, because damn the consequences, she will be the first to try it. Veruca is shown a collection of unique animals, and immediately declares that she wants one, because she’s always had the bragging rights and luxury rare items. And when Mr Wonka refuses to sell? She steals it, because dang it, she will have that golden goose/trained squirrel! Mike Teevee, in his hubris, mutilates himself almost beyond recognition because he had to challenge Mr Wonka’s outlandish claim of transmitting physical objects via television. Charlie was the perfect heir, not because he was humble and poor, but because he had the wonder and appreciation for the treats Wonka made but also the sense and caution not to risk messing with the many dangerous things in an active factory. If the lottery was more fair, maybe Charlie would have had more stiff competition, but as it stands, Charlie is almost the poster boy of ‘won by doing nothing’.
TLDR: Apart from Charlie, most of the other kids were entitled rich (white) kids who gamed a system that should have been fair, and were punished for it by revealing to them their greed and hubris