If a rich person own a building where they are renting units to the average joe making the median wage, they pass the cost of that tax increase down to the renters; which makes it a regressive tax in a round about way.

So if we start taxing the rich now then I’m gonna get taxed when I get rich. At least some people do, hence taxing the rich on itself is going to cause a divide. Not just that taxing or not taxing the rich usually comes with package deal with other issues which some one might be inclined to.

Oh got it now.

If rich people control the government, then rich people would never be taxed. Unless there is an amount that can be allowed to tax, and for the reason above people will divide themselves into two clubs and fight between each other worse than British football fans to the point that one club’s fan won’t recognize fan of other club as equals. Neither intellectually, nor as a member of the same species. This will ensure that nothing will ever happen to the status quo as in a decade or two, each club’s identity will be solely about hating the other club and their fans or whoever is even slightly pleasant to member of the rival club, and that is what all the fans from both sides will spend all their time doing. The only time both fans seem merely united will be when someone says the game sucks or it’s called soccer, but only for a fleeting moment.

Yeah. That's where things are now. The government is full of rich people and often these rich people are working for even richer people. The workers are already divided along the one-day-I'll-be-rich line. What you're describing is what's been happening for decades now. Unfortunately this state doesn't reach a stable equilibrium. Capital always looks for higher returns. Decreasing taxes is one way to increase returns. Depressing wages is another. Unfortunately for capital, at one point higher returns come at the expense of decreasing standard of living for workers. Through crumbling infrastructure, removal of safety nets, decreased purchase power (increased cost of living). The division among the workers protects capital's ability to increase returns over time. But that only works to a point. As more and more workers hit new standard of living lows, fewer and fewer buy the narrative that they will one day be rich. These same people begin seeing the correlation between their falling standard of living, and the capitalist class having it better than ever. At some point so many have crossed into the we're-getting-fucked-today side of the one-day-I'll-be-rich line that there's too few left to prevent change from happening. The we're-getting-fucked-today side has multiple options to force change. One's voting, which may or may not work, depending on how taken over the system is. The other is more or less foolproof - collective labour action - stop working - company strikes, or general strikes if all else fails. If no one is working, there are no profits made, bribes stop flowing, security stops protecting, drinks aren't being served at Mar-a-Lago and Davos. Then we make significant demands.

So yeah, you're right, but that's a transient state that eventually leads to a pre-revolutionary environment. The election of people like Mamdani when NYC capital spend enormous amounts of money to defeat him is an example of a time and place where enough people have gone beyond the tipping point.