What is the "abundance agenda" and how does it relate to supply-side liberalism?

I consider myself a Liberal of this school.

Zoning laws that make it hard to build housing (strangling supply)

It’s a still nascent system created and advocated for by “Card-carrying Liberals”*** in America.

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Housing:

Abundant Liberal meme on this topic

This pretty much shows abundant goals

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Another liberal meme

In a nutshell the idea is that for too long, American governments (state/local/federal) have enacted regulations that have, inadvertently or not, driven up the prices of key goods and services by strangling supply and subsidizing demand. Abundance Liberals are against this combination. Namely, they want to stop strangling supply and allow for the markets — aided by the state where effective**** — to build mass amounts (abundance) of the goods and services we want and need, driving down prices.

Housing Crisis (homes too expensive)

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The Abundant answer to this crisis is to create “abundant” housing, of all types, where it is most needed, thereby alleviating the Housing Crisis, which to Abundant Liberals is a crisis of artificial scarcity due to government policy.

Abundant Liberals want to create mass abundance in all spheres. Energy, education, housing, food, transit, etc etc etc. They tend to be deeply urbanist and aim to have “tall cities” if you’re familiar with the term in strategy games. Lots of apartments, lots of transit and walkability, and so on.

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Does the National Health Service (NHS) in the United Kingdom diagnose rare conditions? If so, does it provide treatment for them as well?

Abundance Agenda and “Supply-Side Liberalism/Progressivism” are the same thing, but the former sounds way cooler.

cheap loans and grants that are given to buy said scarce housing (subsidizing demand)

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Abundant Liberals reject the idea that capitalism itself is to blame for the Housing Crisis, or most other economic crises we are seeing today, instead arguing that bad policy is the root cause.

The battle where this is being put to the test now in in Housing.

****Abundance Liberals are not Libertarians, they are willing to make use of government support in the economy

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***I use the term “Card-carrying Liberal” to denote self-described Liberals who are active in expressly Liberal spaces, fighting for expressly Liberal goals, rather than as a catch-all term for “Democrat”