Urban public spaces are foundational for civic and economic life, yet translating inclusive policy into reality remains uneven. This paper evaluates how governance and planning dictate inclusivity, moving beyond design-centric evaluations to a multidimensional framework rooted in spatial justice. Analyzing Varanasi (organically evolved), Chennai (infrastructure-led), and Singapore (state-regulated), the study reveals inclusivity is shaped by institutional capacity, environmental responsiveness, and socio-economic integration. Historic cities offer socio-cultural vibrancy but lack universal design. Metropolitan models prioritize vehicles, often displacing informal economies. High-capacity states achieve near-universal accessibility but regulate public life heavily. Achieving spatial equity requires integrated governance that prioritizes universal design and guarantees the right to the city for all demographics.