"Another way could be to limit the copyrights on articles to 2 years or so. This would lift the load on many mid-class universities and small scale research institutions as well provide some compensation to the "evaluators" for their work. In consequence, much money could be saved at institutional level that could be reinvested into more research (or grants, etc.), while preserving up to date research access."
This was exactly my thought. Though having read more of this thread. And thought about the issue a little more. I'm leaning towards the POV that all published articles should be open access. Journals provide two important services, which is quality control, and organization/dissemination of information. And I think there is room for both services to flourish. All articles could be published to an open database, while the journals would continue to run much as they have now. The net result being if you don't want to sort through the piles of new research coming in you subscribe to journals, which sort, and filter the information. If you dont mind spending a bit more time looking for things, you just use the open access format.
Regarding comercial research, I think a two year grace period/head start to capitalize on finished research is reasonable. After which the research should be made open, to encourage innovation and competition.
Along that same line, I think patents should last 2 years, with 5 years serving as an absolute maximum, for fields with low ROI. After which point competitors should have access to your methods/research which they can then improve one. Once again to demand innovation.
If however patent law cannot be controlled (limited to that extremely limited span, and we cannot prevent copyright trolling, I would argue it is better to abolish it.)