Before revision:  We provide conditions under which a simple information structure of banning a certain portion of sellers from the platform , and not sharing any information about the remaining participating sellersmaximizes the platform's revenue  .
After revision:  We provide conditions under which a simple information structure of banning a certain portion of sellers from the platform , and not sharing any information about the remaining participating sellersmaximizes the platform's revenue . An important innovation in our analysis that we leverage to obtain our structural results is to transform the study of the two-sided market platform's optimal information disclosure policy into a constrained price discrimination problem .