As I said before, I saw Firefox OS's primary niche being low-end phones. In that market, many people barely care about the OS being run. They could've easily racked up some decent sales in this area without many of their customers caring about the long term benefits. In some ways, Firefox OS was a case of unfortunate timing, part of me wonders if it would've been better to have a longer incubation period to make the platform better before announcing it, but another part of me thinks that they had to release it when they did, before the vacuum that Symbian had left behind was completely filled by Android.

Google closed off the market with Android One. In another world they couldn't get it together, or weren't interested in low margin competition. Firefox OS was a reasonable bet, it could have paid off, even if the technology was manifestly limited at the time. I actually wish they'd kept it going as an ongoing experiment, with a very low budget, once they'd done the work to get it running on a device like the Nexus 5, you'd have thought improvements would flow almost automatically from the work on the browser.

It was also a really bad implementation. I developed for the firefox os reference phone before the launch - it was atrociously slow.

Think low end android phone (of the time!) running software that was 10x slower than android's.

It's really hard to describe how slow it was if you didn't personally use a firefox os phone. There were times when it felt significantly slower than a 386 running windows 3.11.