The Mozilla Corporation will not be floating on the stock market and it will be impossible for any company to take over or buy a stake in the subsidiary.

The Mozilla Corporation, as a taxable organization (essentially, a commercial operation), does not have to comply with such strict rules.

[12] Most of the revenue of Mozilla Corporation comes from Google (81% in 2022[2]) in exchange of making it the default search engine in Firefox.

In March 2006, Jason Calacanis reported a rumor on his blog that Mozilla Corporation gained $72M during the previous year, mainly thanks to the Google search box in the Firefox browser.

[29] The rumor was later addressed by Christopher Blizzard, then a member of the board, who wrote on his blog that, "it's not correct, though not off by an order of magnitude.

[46][47][48] For example, Conor Friedersdorf argued in The Atlantic that "the general practice of punishing people in business for bygone political donations is most likely to entrench powerful interests and weaken the ability of the powerless to challenge the status quo.

In February 2017, Mozilla dissolved its IoT "Connected Devices" initiative, laying off around 50 employees,[52] to focus on "Emerging Technologies" like AR, VR and Servo/Rust.

[57] Shortly after the announcement of staff cuts, Mozilla insiders leaked information that the Google search deal will be extended until 2023 instead of expiring in 2020, meaning the corporation financial state is stable.

[58] In May 2023, Mozilla acquired Fakespot, a startup which specializes in identifying fake product reviews on e-commerce websites.

Mozilla plans to integrate their technology into Firefox while maintaining its existing website and browser extensions.

[60][61] The Mozilla Corporation's relationship with Google has been noted in the popular press,[62][63] especially with regard to their paid referral agreement.

Despite the deal, Mozilla Firefox maintains relationships with Bing, Yahoo!, Yandex, Baidu, Amazon.com and eBay.

[67] Internet privacy advocacy groups have expressed concerns surrounding Google's possible uses for this data, especially since Firefox's privacy policy states that Google may share (non-personally identifying) information gathered through safe browsing with third parties, including business partners.

But in 2017, after Yahoo was purchased by Verizon, Mozilla used a clause in the contract to end it, returning Google as the default search engine.

[75] A Microsoft SEC filing on June 30, 2005, acknowledged that "competitors such as Mozilla offer software that competes with the Internet Explorer Web browsing capabilities of our Windows operating system products.

"[76] The release of Internet Explorer 7 was fast tracked, and included functionality that was previously available in Firefox and other browsers, such as tabbed browsing and RSS feeds.

[77] Despite the cold reception from Microsoft's top management, the Internet Explorer development team maintains a relationship with Mozilla.

[81] In October 2006, as congratulations for a successful ship of Firefox 2, the Internet Explorer 7 development team sent a cake to Mozilla.

[82][83] As a nod to the browser wars, some jokingly suggested that Mozilla should send a cake back along with the recipe, in reference to the open-source software movement.

[87] In November 2007, Jeff Jones (a "security strategy director" in Microsoft's Trustworthy Computing Group) criticized Firefox, claiming that Internet Explorer experienced fewer vulnerabilities and fewer higher severity vulnerabilities than Firefox in typical enterprise scenarios.

[95][96] Version 1.1 (released on June 10, 2009, to the Mozilla Add-ons service) and later of the Microsoft .NET Framework Assistant allows the user to disable and uninstall in the normal fashion.