I wouldn’t assume that keeping a reliable tenant always means accepting a large discount. The gap is meaningful, but it should be supported by comparable completed lettings rather than listings alone.
Price two scenarios: a smaller increase with near-certain continuity, and a larger increase...
New-listing volume is the other half of “moving to the next listing.” Buyers can only do that easily if comparable alternatives are appearing. If supply is thin, higher financing costs may shrink budgets without giving buyers much extra leverage over a particular seller.