That doesn't make landlords the origin of high rents.
If people want less rent, it doesn't help to oppose landlords. All it does is reducing the number of participants which worsens the situation.
Renters can decide elections. Unionize and negotiate with the parties how many construction sites they will create. Then vote accordingly. Then rent will go down.
Landlords are not parasites. If you have enough competition then profits will go down until it's barely rewarding to manage property, which somebody has to do.
Housing just costs so much becsuse of zoning laws and lack of public transport.
Unless you pull of a revolution, competing landlords are key if you want rentable housing.
But you want to abolish the idea of rent. What will happen? People have to own their housing units. This requires credit. People who don't get credit now, where will they live?
Of course you can establish Socialism. But you don't believe that voters can change politics.
What's the most possible change?
I think making the housing market competitive is possible. But it's still difficult because there needs to be a decision about how to handle collapsing housing prices and the defaulting on most mortgages.