Mozilla brings in almost $700 million per year, they have more than enough money to sponsor MZLA/Thunderbird development.
Mozilla is so sad. They have a lot of money and they could fund the development of both Firefox and Thunderbird.
Yet, they decide to waste almost $7 million per year to pay a CEO and God knows what else.
What do they do with all that money? According to wikipedia, they had about 750 employees. That's a lot of employees for the amount of useful products they have.
They need a lot of money to pay their useless execs, so 700 million must be barely enough to keep things running
Mozilla tried to kill Thunderbird in 2020. They've been talking about not sponsoring it all since 2015.
They might have the money, but they don't really seem to want anything to do with the project.