Redfin and Zillow are not the problems in the SFR industry. These are tech companies that were trying to capitalize on the PE flowing into SFR. Their lack of success is not an indicator for the industry as a whole.
Make no mistake about it: SFR is alive and well and increased rates will not hurt them. Most have paused acquisitions but their cash flow is still fantastic. The outcomes over the next 24 months will play in their favor and those companies will grow as the economy pulls back.