Those individuals are the real owners of the property, hence they may exclude whomever they wish. A State is an agency which possesses an exclusive monopoly of ultimate decision-making and conflict arbitration within a given territory. In particular, a State can insist that all conflicts involving itself be adjudicated by itself or its agents. Certainly, based on this definition it is easy to understand why there might be a desire to establish a State. Commercial property owners such as stores, hotels, and restaurants are no longer free to exclude or restrict access as they see fit.
Employers can no longer hire or fire who they wish.
In the housing market, landlords are no longer free to exclude unwanted tenants. Furthermore, restrictive covenants are compelled to accept members and actions in violation of their very own rules and regulations. In short, forced integration is ubiquitous, making all aspects of life increasingly unpleasant.