I know that we, as parents, want to avoid, that, but considering how few spoiled children I've seen (none in recent memory), I'm beginning to think that they're legendary creatures.
Partly, I think that spoiled children are a term of authoritarian culture, and that authoritative culture sees the issue differently. "Spoiled children" mostly makes sense when the authority demands conformity to the authority.
As for "doing everything that the kid wants", what parent can do that? Most of aren't rich enough to say yes to everything even if we are permissive liberal wimps. We have no choice but to say no on things, and in that, we have a practical, real-world brake on most spoiling. Perhaps if I was rich I could spoil my child, but only if I'm rich.
I now put "spoiling children" into the same realm as werewolves and vampires: horror stories for parents.