Several recent papers in the literature have reformulltlated the nature of equilibrium in IFiebout mo(lels by alSSlIuim`ing an exogenous number of communities, inflexible commullity l)OU(alaries, anti in pirticular inactive lantlowners and developers. Ihis paper argues that these assumptions are unwarranted and reSul1t iIn in(eterminate solutions and incorrect analyses. Determinate lOn1g-rUn1 solutions require equilibrium in intercommui land markets, which in turn require giving lantlowners and/or entrepreneurial (leveloelers an active role in the models. The role of politics in these models and its juxtaposition with entrepreneurial activities are also analyzed.