It runs, it just hasn’t “been run” yet - it’s road-ready to the extent that it could most certainly be driven, though “road-ready” presumably also entails knowledge of “how” to drive it and “how good” it would look being actually driven. To those ends, details still need to be ironed out.
The philosophy “around it” could of course be worth exploring, as you have begun to do and I have not (for which you “offer tools”) - but it’s not really my concern at the moment as I’m more interested in seeing it be driven first.
It already is a model, cohesive and clear in its foundations, just not a completed one with all the details worked out. That’s more what I’m interested in exploring at the moment.
It’s an interesting reflex to side with “the devil you know”, having been shown that “the grass is greener on the other side”. Of course the ultimate evaluation lies in real application, but consider that this is by default a rejection of anything new - unless you’re simply siding with caution preliminarily, subject to further evidence: “on the fence”, so to speak, but perhaps leaning more towards getting off on the side of the “tried and flawed” than “the new and potentially less flawed”. An entrepreneurial spirit, perhaps, is what’s needed to commit to exploring a “porto-idea” over a “full fledged idea”.
To briefly comment on your “default”, any “market caps” inherently divide society and create tension either side of the cut-off point: it’s arguable that your default creates a lack of incentive to want to progress beyond the “market cap” where suddenly a fifth of your earnings is taken away from you by threat of the force of law, making the higher bound of non-taxpayers considerably more rich than the lower bound of taxpayers, incentivising the lower bound of taxpayers to “earn less to earn more”. People will divide themselves into being clearly one or the other to avoid that awkward middle ground, and on a social level a stigma will be created dividing the “social contributors” from those who don’t contribute to society. To avoid all this, I believe tax systems often resort to only taxing revenue above the market cap at the higher rate, and taxing the revenue below that market cap at the lower rate, but this is why I side with a continuous function (the 80-20 curve) and completely avoid these issues altogether. Additionally, I apply my solution specifically to “expenditure” and not “revenue”, because I do not want to even go near any potential penalisation of working to create revenue. If anything, it’s “taking” from society for yourself that has grounds to be interfered with, but giving to society ought to be encouraged - and my solution allows this explicitly through the mechanism of creating a “disconnect in the continuous flow of currency around the whole economy”: allowing a temporary disjunct between the price paid and price received (ultimately fully accounted for by paying off the deficits with the surpluses with mathematical precision).
All of this, as well as the arguments I’ve made thus far - and more that I’ve so far neglected to mention - is why my solution is so more sophisticated than the comparatively much more blunt instruments of “tax this in this way, but don’t tax that in that way” which is the mental box within which the overwhelming majority tend to prefer to remain inside.
Yes, for lack of a better approach than using force, you’re going to have to either force people in some way like in your system, or simply throw out force altogether and do nothing - as in the much more simplistic Libertarian “laissez faire” anti-solution.
That’s why I resolved to create a better approach than either “using force” or “doing nothing”. Turn to the carrot - not the stick. Some sticks are better than others as you say, such as your “maximum wage” system, but my intention is to think outside of this “tax box” and instead explore the realm of incentives rather than duke it out in the seemingly endless fight over which is the “least bad” way to lessen iniquities. Ultimately that fight is always won by those in power in the same way: the negative effects are largely passed down to those with the least power, and those with the most power remain largely unaffected. The only way to resolve this is to come up with a mechanism that incentivises those in power to genuinely want to lessen iniquities, by tying this in with their self-interest (which was always all they were going to follow anyway) - with or without any of these impotent attempts to “tax them” that don’t providing any incentive for them to not simply decide “nah, not gonna do that” as they’ve always done so far.
That’s why I went ahead and solved economics.