It would incentivise the hoarding of currency instead. Holding or investing in anything else is, on average, a losing bet in a sustained deflation.
By definition, deflation is people choosing not to contribute to production obtaining increasing returns on doing and risking absolutely nothing at the expense of those who do contribute to production working harder or taking more risks to serve them. You're accusing me of "engaging with a pretty common fallacy" whilst arguing against a tautology.
> So you can see a visible impact of this in housing prices. In the 50s a typical house used to cost about 2 median salaries. [1] Go further back in time and you're down to 1 median salary. In modern times, we're at historic highs of a median home costing 5x a median salary, and in desirable locations like western California it even gets up to 12x local median salary for a median home. [2] That's median, not Beverley Hills.
That's the supply and demand of housing, as well evidenced by the large disparity of house price changes. Deflation does not incentivise building more houses (quite the opposite actually). In practice, it just means you pay higher mortgage rates and end up with a house that isn't worth anywhere near as much as your mortgage repayments, or you rent - both of which involve more of your lifetime income being transferred to richer people.
> Real wages are up 14% over the past 47 years [3], and we now have a trillionaire.
The trillionaire is arguing the same position as you on currency. I'm sure he and the other billionaire funded think tanks attacking "fiat money" almost as strongly as they attack tax and regulation on billionaires and services for the poor do so because they care about giving the little guy more...