Rental real estate is correlated to the economy. Most tenants have jobs, usually not at the high end, irreplaceable level. Tenants often lose their jobs when the economy goes south. Rents decline, vacancy increases, as do evictions. It becomes more difficult to find decent quality tenants. Smart landlords lower their rents but not their standards. Most small landlords are not that smart, and a concentration of bad tenants can undermine an entire rental neighborhood. It's rare to have an event like 2008-2012, where foreclosures and short sales actually increased the tenant pool.
Real estate is an inflation hedge only when there are qualified buyers that want to buy. Property prices in desirable locations have risen dramatically over the last few years because there is too much cash out there chasing too few investments. You are late to the party. In your shoes, I would anticipate tougher times for landlords over the next few years.