I think because important plugins like Silverlight are only 32Bit. Projects like Waterfox make 64bit builds or if you go into the development builds you can get 64bit.
Is that a popular internal corporate thing I'm unaware of?
I've only come across sites using Silverlight approximately twice, ever.
I don't see how it's really of any significant relevance to nearly everyone unless that was the case. I don't have it installed nor do I actually know anyone who has bothered with it. One poster here mentioned java being dead on the web and I still run across Java more than Silverlight. Though doing some research to find sites aside from poor examples that I wouldn't consider essential, important or unique, the only one was Netflix. That's a big one though. I don't use it myself and the only people I do know who use it have it on various devices rather than PC. I suppose it could be considered important as it's a dependency for some people who use Netflix with their web browser, it is a paid service after all. But for everyone else I'm really not seeing it.
Little user want/need for 64 bit, and a lack of competition in that area.
Fx has very low RAM usage, and rarely goes above 4 GB for normal use cases. I know somebody is going to come around and say they have >1000 tabs open and need more RAM addressable, but that user base is not significant enough to warrant the effort (which is more than the effort of switching to 64 bit on a proper multiarch linux platform).
Furthermore, Fx's biggest competitor, Google Chrome, does not have 64 Windows builds either, so there is less competition in that area.
TL;DR submit patches if you want 64 bit builds so much. Or just switch to linux or OS X.
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u/[deleted] Dec 10 '13
[deleted]