Landlords disconnecting vital services like water and power supply to tenants in case of rent dispute - Khaleej Times
If the disputes are over nonpayment, do landlords have any other leverage?

If the disputes are over increased rents, why don't landlords simply raise the rent? And if the tenant refuses to pay, then evict. Or is that a difficult and regulated process?

I suspect that what the government is seeking to do is prevent the landlord from raising the rent to the market level. Perhaps the government should examine whether it stands in the way of an increase in supply.