This might just be me being a joyless communist, but I think that all technical standards should be freely accessible.
Or even as a "middle" ground, all withdrawn, superseded, and "no-longer-relevant" ones should be released into the public domain.
there is nothing standard about a specification that is unable to be accepted by some within it's domain, especially not because they do not possess the means to access their definitions
or, worded differently: how do you expect me to accept your standard if you will not tell me how it is specified?