Learned about 'Harberger tax' recently.
The motivation is like
* private assets (private use and excludable) incentivise investment/productive improvement/development well
* but private ownership of non-liquid, non-fungible, idiosyncratic things (factories, houses, natural resources maybe, AI systems maybe?) acts like a monopoly, distorting allocation (more productive/valued uses aren't often realised)
* e.g. NIMBYism
* e.g. 'holdout pricing'
* e.g. inefficient bargaining due to information asymmetry
* common ownership and lease auctioning incentivises efficient allocation
The pitch is like, can we do something in between?
* self-assessment of value (reveals something close to honest valuation)
* pay some rate of tax on that self-assessment
* you have to sell at that self-assessed value if someone wants to buy
They claim this keeps most of the benefit of investment incentivisation, because things are mostly private in practice, but substantially improves allocative efficiency by lubricating the more valuable trades.
Anyway, mainly it's interesting because getting into the gubbins of particular proposals helps me learn about the relevant dynamics in general, but also I wondered if there's something in this vicinity that could work nicely for AI development and AI deployment. (Like maybe a Harberger tax on compute, or on AI systems, or...)