I'm sure there are some fabulous Landlords out there who are providing good standard, well maintained property at an equivalent mortgage cost or even a subsidised rate (as per councils). Some, but not many.
My experience in the rental market is fairly limited (9 rented properties over the years) but in most cases my Landlords have wanted to take as much out and put as little in as possible.
I fully appreciate that the housing market these days is a fabulous investment, and a secure way of making more money. I just wish it wasn't.