OK, buddy. I mean you can try to change the entire world, but I don't think you will have much success. Correction - I know you won't have any success.
You get nothing in return for your rent, except for the roof over your head (that apparently is so unimportant that it isn't worthy of consideration - yet you really do want to own the roof). A roof over your head that costs per month more than you pay per month (cap gains excluded).
Most private rentals make a loss, and the gain is at the end (I think that is silly, and tax reform can probably help with that). If/when you do get a house, you will find that your cost isn't just a mortgage, as you seem to think. It is mortgage + insurance + local council tax + regional council tax + maintenance. And when you take all of those into account, what you pay as rent is significantly less than the TCO of owning.
The only solution is to bring house prices down through increased supply and decreased cost of production. Making rentals go away is just idiocy. I have lived in rentals and owned houses at various times around the world, and not once when I was renting was I in a situation where I actually wanted to own in that location or at that time.
Mao needs to take a trip to NZ
And don't forget that they literally put up no risk because the tenant usually pays for both the mortgage and maintenance costs in full plus a monthly profit for the landlord. The money that they are putting into the mortgage doesn't even go away either, they get to keep the asset once it's paid off and can sell it if they want and realize that dead labor value put into it by their serfs.
Landlords are the worst form of capitalism and are legitimately subhuman with how extensive and vile their exploitation of the working class is.