Does anyone remember how Netscape tried to expand the browser by adding email, news, an html editor, a calendar and other stuff?

This reminds me of that strategy.

And does anyone remember how Chrome killed Internet Explorer? By making a slim, fast and standard compliant browser without any bells and whistles.

I wish Firefox would focus on making the browser a great basis for software that runs in it. And leave the development of applications and tools to websites and plugins.

That Firefox does not support the file system access API makes Firefox users have a really clunky load+save experience in web apps for example. This is the reason I use Chrome and suggest using Chrome to the users of my software. Not because Firefox has to few bells and whistles.