I think the best viable option for them is to either offer a subscription model. Or increase requests for donations.
Firefox
A place to discuss the news and latest developments on the open-source browser Firefox
what would a subscription even do?
Id say support Firefox development, maybe premium access to some of Mozilla's services, possibly cosmetics in browser
Also, not being able to set the home button to a custom URL is fucking crazy. I want the home button to take me to my selfhosted dashboard that has all my services and links on it. I don't want the home button to take me to the dumbass firefox page and have to click another link to get to it.
Been using Kiwi instead for this sole reason but now Kiwi is dead. I'm not willing to concede this workflow and make an extra click because Mozilla is braindead and can't implement a functional home button like every single browser since the beginning of time.