codes and standards are available on my state's web pages. does this mean that every state doesn't publish or does it mean nobody looked?
aside from the money generated by sales of codebooks, what is the incentive for folks like the NFPA to bother improving codes and standards year after year? the work, expert and research time, isn't cheap and new standards have to be written for every new construction method to come down the pike. and "old" standards have to be reviewed updated to incorporate new information, often as the result of unforeseen failures that cause loss of life or property.
if you read one of the codes (in my case, the National Electrical Code) you will find that the entire code is written with one thought in mind - don't let anyone's house or business burn down for lack of enforceable standards.
unless some means to ensure adequate funding for ongoing codes and standards work (something that cannot be ignored or cut "because we can") the present system works just fine. it ain't broke, so don't try fixin' it!