Why a medium size or large size corporation does not want a block of a C classes?

Medium to large corporations often avoid a block of C-class shares because these shares typically come with limited voting rights and may not provide the same level of control as A-class shares. Additionally, having a significant block of C shares can dilute the influence of existing shareholders and complicate governance. Corporations may prefer to maintain a more balanced distribution of power among shareholders to ensure stable decision-making and avoid potential conflicts.