The main point of their argument is that strip malls and stroads and suburbia is unsustainable because it can’t generate enough tax revenue to support its infrastructure.
I think this means that entities do stand to gain from better planning, but it’s over the long term. You can’t build it in a year and expect it to be immediately full, but you can expect it to survive the long term (unlike the mall).
You may be interested in a policy the UK government is considering:
https://policyexchange.org.uk/wp-content/uploads/Strong-Subu...
The idea is to let small groups of residents (a single street) vote to loosen planning restrictions in specific ways, allowing for incremental intensification of suburbs.
"The housing crisis is often presented as a zero-sum conflict. More houses must be built to avoid rising homelessness, falling home ownership, and wider economic stagnation. But they can only be built by forcing them through against the will of local people, either by imposing high-rise on our historic centres, or by concreting over our countryside with more suburban housing estates. On this analysis, the interests of those who already own homes are fundamentally opposed to the interests of those who do not, and policy is simply a matter of choosing which interest group will triumph over the other. This analysis is profoundly mistaken. The appearance of opposed interests is the result of a defective system, which excludes existing communities from the benefits of development while imposing on them its adverse effects. If existing communities are allowed to control the form of development and to share in the benefits that it brings, they can become enthusiastic supporters."
I like it. I do hope it is possible for communities to become enthusiastic supporters.