Apparently this caught Verizon by surprise:
> "Yahoo and Mozilla have enjoyed a productive relationship together since 2014," said Charles Stewart, a spokesman for Verizon’s digital advertising business, Oath. "We are surprised that Mozilla has decided to take another path and we are in discussions with them regarding the terms of our agreement."
(Source: https://washpost.bloomberg.com/Story?docId=1376-OZF67R6VDKHT...)