It sounds like a management issue. They keep frolicking around and not listening to the userbase. There is no reason other than management that Mozilla couldn't be a profitable and sustainable company. They create some half baked thing no one asked for and then kill it off.

That's why you make enterprise products. Companies will continue to pay for services they don't even use for years because nobody knows what it is or what it does.

And then SimpleLogin comes, as just one example, and succeeds. Mozilla obviously messed up all their efforts, for one reason or another.

Not really

They create 100 random things no one wanted and then offered then mostly for free. They have a massive management problem. I think the biggest issue is how risk adverse they are. They don't want to take big risks so they instead take a bunch of small useful risks that fail. They need to start something and then commit. Also baking more things into Firefox is not the way forward. They need stuff that is separate and useful.