So much to unpick.
Most landlords view providing homes as their own private income and investment opportunity. They are not in in for the common good. They are in it for the personal financial returns.
So you think LL's shouldn't profit? Do you understand how many costs LL's have? How high the risks are? Clearly not. Of course they're not in it for the "common good" you daft thing. Do you go to work every day for the common good or do you expect to get paid?
Do you think tescos should provide free food as it's a basic human right?
Do you fancy buying a house and then letting it out to people for no profit knowing they could stop paying their rent at any time and it would take you approximately 2 years to get them out? Meanwhile you'd still be responsible for paying the mortgage? Oh, and then if you manage to get them out they may decide to trash the place? Hmm? Do you?
Many have provably profiteered from their tenants, simply because they could. Rent increases of 20% between one tenancy agreement and the next are not unusual, without any improvement being made to the home, or any benefit to the tenant.
Rent increases rise to match market value/costs to the LL. Interest rates are sky high meaning some LL's are paying 4 x more on their mortgages. If they cannot afford to pay the mortgage the tenant will be evicted so the LL can sell up. Of course rents have to rise over time to match the LL's costs - otherwise why would anyone bother being a LL?
If you were selling your house worth £200K to a nice couple, would you let them have it for £100K, just to be kind?
In my opinion the state should provide rented housing to people who cannot purchase it for themselves. Rents should be collectivised and used as income to maintain existing homes and build new ones. Rather like... ooh, council housing, in fact.
You can have whatever opinion you want - doesn't mean there's a chocolate teapots chance in hell of it happening.
Whilst I have personal experience of very good landlords I am also aware of many greedy, grasping bastard landlords who should not be allowed to be responsible for providing a hole to a mouse let alone a home fit for humans.
And I have direct experience of many lowlife scumbag tenants who think the world owes them a living and decide to stop paying their rent, make you go through hell trying to get them out and then cause £1000's of pounds worth of damage just to be spiteful. 🤷♀️