Besides, there are other non-economical reasons why ransoms should not be paid.
If the death penalty was an effective rational deterrent to murder, then the death rate from automotive travel would put the auto manufacturers out of business.
I know I have 1% or so lifetime chance to die in a car accident. Using cars is a conscious choice I take. They increase the quality of life dramatically.
Can they instead keep full state of the page you were in and make forward button work such that all form data is not lost?
If you accidentally press back button you can just press forward button to get back to where you were.
In my limited understanding, this behavior is controlled by the website, not browser. This is done on purpose and is part of web standards (standard practices, at least). Sites can specify to preserve the form content through page back/forward, or they can specify to delete it after the page is left. Many sites use both options on purpose. The default in website software is usually to delete, as this is best for secirity (login screens, submission of cc and other personal data... most typed-in things are best gone after the page is left, just to be sure in case another user is using the same computer). Removing or modifying this browser behavior would break things in a major way.
So why do these authors publish their papers through expensive journals instead of just uploading to slideshare.net or scribd?
Besides the career advancement others have mentioned, another main reason is that peer review in mainstream journals performs a significant quality check on both the results and the clarity of communication. The system is not without its failures, and it does not work well every time, but by and large it works and it is better than any known alternative. Notice I have written mainstream journals. There are "peer-reviewed" journals out there that will publish anything. But, in any area of science it is generally known among scientists which journals follow good practices and which are junk.
Putting a manuscript online is easy nowadays. E.g., in many areas of natural sciences arXiv is a de-facto repository for nearly all papers published in the field. Papers often appear there many months before they appear in the journal. Yet it's rarely that a paper ends its life in arXiv. Most are submitted to journals, receive anonymous reviews, are revised (sometimes more than once), copyedited, and finally published. This can often be traced by several revisions of the manuscript in arXiv.
The problem we are dealing here is that running a journal and managing the editorial process (at the minimum, peer review and publication decisions) still costs money. These have to be recouped somehow. Hopefully it shakes down over the coming years and we'll have a better system than subscription-based journals that only universities can really afford.
The computer can't tell you the emotional story. It can give you the exact mathematical design, but what's missing is the eyebrows. - Frank Zappa