It is part of the nature of this system. When there is a disproportionate amount of steem spread out through the community, some people will have more power than others. It is not inherently wrong, its a mechanism of the system. Vote buying also is not inherently wrong, its a business at the end of the day and people are concerned with turning a profit. This comes down to a philosophical principle I think and I'm not sure there is an easy solution. Good to ponder though