Ultimately it's a matter of being able to give and take in healthy doses. Even if a book, movie or game has a main character the story would become very dull and tiresome if only the main character ended up being relevant and successful.
This is no different within role-play. Everybody's character is their 'main character' and the primary focus of the story they want to tell. Ideally, though, they're not going to be super powerful and able to overcome any obstacle set before them. Sometimes they'll fail, experience unexpected losses and setbacks. They'll have their triumphs, of course - but not constantly.
People are free to have their character be the perpetual hero, of course, but if they're really only looking to treat everybody else's character as destined to lose then one has to wonder why they've invested in a group activity and won't just go off to create fan-fiction to detail how amazing their character supposedly is instead.
This is no different within role-play. Everybody's character is their 'main character' and the primary focus of the story they want to tell. Ideally, though, they're not going to be super powerful and able to overcome any obstacle set before them. Sometimes they'll fail, experience unexpected losses and setbacks. They'll have their triumphs, of course - but not constantly.
People are free to have their character be the perpetual hero, of course, but if they're really only looking to treat everybody else's character as destined to lose then one has to wonder why they've invested in a group activity and won't just go off to create fan-fiction to detail how amazing their character supposedly is instead.