How high the top can climb is not a good indicator IMO-- I would look at the median availability of all aspects of social achievement, rather than just how high the wealthy have managed to perch themselves.
I don't know, it's not cut and dried. Sweden has a high general standard of living, and lower overall inequality (by miles), but also a higher proportion of people who've "made it". So just saying "a lot of people got rich so it must be bad" isn't necessarily a straightforward conclusion to draw. What that suggests is that in Sweden there's much higher social mobility, so talented people do in fact get rich more often. If you have a situation where you can say "well there's only
one billionaire in
my country, so accumulation of wealth is less of a problem" then clearly that
is a problem. That means you have very high inequality and low social mobility.
Saying you don't want
any rich people, because that's bad because someone else is poor, is basically saying you want a system that actively works to keep everyone poor and actively steps in to hamper anyone with initiative. You could keep everyone perfectly even, getting a GINI even lower than the mid 20's that the Scandinavian nations have, but that would come at great expense. Everyone would be equal. Equally eating dirt, basically.