My point being, Mozilla has to try to innovate, and they have to try these projects. They're being reproached that some failed, but no one is questioning Rust now that it's taking off...
They're also one of the founders of LetsEncrypt, maintain MDN, etc.
Furthermore, one time long ago, Mozilla might have thought they didn't need to build a mobile browser, and focus on their main product: Firefox for Desktop.
Next thing you know, Firefox is completely irrelevant on what's becoming the dominant computing platform.
I don't know whether VR/AR or IoT will be a thing, and I'm sure that they will be criticised for their projects there when they don't, but I'm certainly glad they're at least trying to make those open platforms - just in case they do become mainstream.
Every tech company has failed projects, you can't blame them for trying.
Look at Google: google wave, google plus, google buzz, their clusterfuck of IM / phone calls.
I mean knock yourself out, there's a whole list here: https://en.wikipedia.org/wiki/List_of_Google_products#Discon...
My point being, Mozilla has to try to innovate, and they have to try these projects. They're being reproached that some failed, but no one is questioning Rust now that it's taking off...