As populations in major global cities continue to swell, public spaces in many urban areas are increasingly being taken over by commercial billboards and private development projects. At the same time, there is a view that these spaces should prioritize community interaction and residents' leisure. In urban environments where land is at a premium, is there an irreconcilable conflict between the commercial use of public spaces and the public interest? Please articulate your position on this debate, providing reasons and concrete examples to support your viewpoint.