Realtors are fighting over hidden listings. Their battle could make it harder to find a home.

Christian Blaza for BI

The experience of lying in bed late at night and scrolling through a nearly infinite feed of homes is a modern miracle — not merely because of all the tech packed into your iPhone, but for the simple reason that all those houses are gathered in one place. Open up Zillow, Redfin, or any of their competitors, and you'll have a clear picture of almost all the homes up for grabs around the country.