It's strange to me that one of the most popular requests on Mozilla Connect is Startpage as a default search engine, but Mozilla opted for Ecosia.
I have nothing against Ecosia in theory, but it's notable that the company will only plant trees based on clicked advertisements, and the privacy policy isn't quite as great as Mozilla has suggested in its promotional material.
Maybe Mozilla should try harder to also recruit Startpage. More options for users and more money for Mozilla.
It is also noteworthy that Ecosia has been hosted on Amazon and Cloudflare. Any intentional reference due to the trees being planted in the Amazon Rainforest?
https://hosting-checker.net/websites/www.ecosia.org
It's probably as simple as Ecosia pays more than Startpage was willing to. Firefox has been bleeding money and it's a little frightening to see what was the open source browser struggle to right the ship.