I have no data for this but I'd imagine rents have increased substantially to make up for the eviction moratoriums. Several friends of mine who own an extra house (usually their parents) ran into the problem of being unable to evict a tenant, and also having the tenant refuse to pay (because the government told them it was ok). The only solution here is to raise rents to compensate and unfortunately this drives out would-be good tenants.
But yeah in general rents being more expensive than mortgages is a function of risk. Renting is generally less risky for renters are more and more risky for the owners, so it's only fair that the owners be compensated for the risk. The question is where do you draw the line on fair risk compensation vs outright usury. In states like California and New York it's getting to be insane. Even in the low CoL area I am in I have no idea how people pay $1000 for a shoebox studio.