https://www.cnbc.com/2018/02/28/amazon-ring-deal-biggest-loser-is-adt-vc-jason-calacanis-says.html

An Amazon-Ring tie-up is bad news for alarm system company ADT, VC Jason Calacanis said Wednesday.

Amazon announced Tuesday it was buying the smart doorbell maker. The deal is worth a reported $1 billion and could help the company jump an important hurdle in its Amazon Key delivery business.