Yeah the recent mortgage rises are a perfect example of what will happen, and I think you raise an interesting point that the lenders will put pressure on the land lords as well to increase rents to cover this.
While I don't like small B2L land lords I dislike large companies mass investing in the rental housing market due to the increased power their size gives them. I dont want to see B2L squeezed out for them as that's going to be much worse in the long run.