I don't know where you're getting your ideas. None of what you say is true. You're taking some kind of bizarre ideological stance ("tiny group of lazy parasites"?) that isn't supported by any kind of evidence. You can look up the great success of many anti-collusion laws, and your solution would be economically harmful and inefficient in a large number of ways. All I can say is, I think you need to study economics more. Landlords provide a valuable service (making rental properties available to people who prefer to rent rather than buy), and they're not making extraordinary profits relative to other industries. Remember that as demand goes up, so too does the price they have to pay to acquire their properties, and therefore the mortgages they are paying to banks. If landlords made extraordinary profits relative to other businesses or investments, everybody would be rushing to become a landlord. But they aren't, because it's hard work and involves significant financial risk.
If people able to live in a home they own harms the economy, sign me up.
Houses are not investment instruments. They are spaces where people can freely exist as they are. A domain that they have full dominion in to authentically explore who they are, who they want to become, and what they want to share with others. A place to raise a family, to rest without a mask, and to be safe as they are.
Notice how I didn't mention economics at all?
Just because you have a house / houses doesn't mean others don't. Do you have any idea what it feels like to be homeless? I dare you to try it. Do you have any idea what it feels like to be a renter under the thumb of a landlord with no hope of ever having your own home?
My "policies" originate from empathy for real people. The majority of people, actually. It does not give a single shit about economics only benefiting the rich.
But that said, if you give most people the ability to have a true home, the economy will explode in activity. Instead of spending money on rent, people would spend on goods and services. They'd be happier, so they would spend money on having fun.
Making housing affordable is a no brainer.
The nice thing is, we already know what the alternative is. The economy is collapsing right now, in no small part due to the housing crisis that has been going on for a long time.
Since my policies won't be occurring now or ever, let's both sit back and enjoy the lack of these policies, and see how wonderful a world that is.