I'm not sure I fully understand the issue? like should competitors not be allow to price themselves based on their competitors? collecting competitor pricing data shouldn't be real-time and automatic? Corporate landlords shouldn't/can't hire consulting firms to assist with pricing based on their competitor's data?
The pricing for rental property should be based off of the cost of money to acquire the property + the cost of upkeep + some profit margin and rental companies should be competing to undercut each other on each of the three rather than just seeing how much __more__ they can price their units than their competition.
This is late-stage capitalism and I'd rather see discussion around policy to fix the core issues rather than bikeshedding about what material to use for the bandaid on the gunshot wound.