Why don't construction prices go down?

There was a wealth tax from 1952 to 1997, which is currently only suspended. But great lobbying work to drag the middle class into it.

Take a look at where the top tax rate started in those years and then get back to me. Ok?

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It could be so simple if it weren’t for the old conservatives spreading the myth of the lazy unemployed so successfully. The German Michel falls for it, harboring resentment against his natural allies and following the pied pipers into the depths with euro signs in his eyes.

Yes, it is really terrible to have to constantly argue with dumb people like me, I know. What a paradise the world could be.
Wait a minute. In which countries of the world is there more prosperity? In the capitalist ones? Or in the socialist ones, which have declared the rich as enemies and handed power over to the workers?

That’s why I’ll now leave you to your socialist fantasies, where people go to work for the joy of it and not because they have to, to have money to live.

Vermögenssteuer -> 80 billion per year.

How do you arrive at that figure? Recently, about 4.5 billion was collected. Even unions or similar organizations optimistically estimate "only" 20 billion €.

That has nothing to do with socialism.
Germany is one of very few countries that taxes wealth so low.
We are a low-tax country for wealth.
Again, those who pay the top income tax rate are not affected at all. Because the wealth we need to address belongs to people who no longer earn any money from work. They let their wealth work. Because from a certain threshold, it simply keeps growing more and more. You cannot prevent that.
Then you can probably even lower the top tax rate or have it applied much later.

How do you arrive at that number? Recently, about 4.5 billion were collected. Even trade unions or similar organizations optimistically calculate “only” 20 billion €.

You are right, sorry that was imprecise. The 80 billion refers to annual lost revenue due to tax privileges introduced in the last 30 years.
The Tax Justice Network refers to data from the Federal Ministry of Finance and expert estimates.
Wealth tax amounts to 24 billion € with an exemption limit of 2 million €, and 9.5 billion € with a 20 million € exemption limit.
By the way, the top tax rate has actually decreased! The problem is rather that the thresholds for progression have not been adjusted for ages.

Where is the money actually supposed to come from,

Decline it all the way to the end, where YOUR money comes from, then you have the answer. What does your employer pay your salary with and where do their customers get the money they give to him, etc. all the way back to the beginning.

But if we can't get people to work and create value...

Decline it all the way to the end, WHY value is created. Why can your employer run a business model and employ people. Where are your employer's customers employed, etc. all the way back to the beginning. I’ll give you a hint that involves both questions: labor costs are not only costs for companies but also future revenues. I know, the business economist looking only at his individual company cannot see this. But economically, this is indisputable.