Atlanta taxi drivers, battered by Uber and Lyft, sued to get Georgia to compensate them for what they contended was a government "taking."

A Georgia Supreme Court ruling this week tossed that attempt. The justices were unanimous.

The taxi drivers wanted to get paid for the diminished value of city-issued taxi medallions. But the high court's decision signals a bigger risk for those who think they can rely on government protections to limit new business rivals.

Check out why this might be the last legal gasp for Atlanta taxi drivers' Uber fight, in my latest Unofficial Business column on MyAJC.com

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In other Business news:

Ride-hailing service Lyft is partnering with Waymo, the driverless car division owned by Google's parent company.