Why are still not at 64 bits [was Can't figure out Firefox

[Michael ODonnell]

Are we starting from the assumption that this is a meritocracy
where the "best" (insert your definition of "best" here)
design/implementation wins?  If so, how do you explain X?
(replace X with "Microsoft" or whatever else suits your mood).

I just bought a system based on a 64bit AMD chip because I
hope it positions me to take advantage of 64bitness should
it ever become as ubiquitous as 32bitness, but I'm not holding
my breath...