15 to 20 percent increases overnight
the listing agent raised the monthly cost by $3,000
That's $15,000 a month, $180,000 a year before the price increase. Maybe try hunting for normal people rentals and others would have an ounce of care or sympathy for you.
I'd also wager that most of these people have properties themselves that they use to gouge money from others for "passive income". Well, they can passively suck it.