Unfortunately I can’t access my papers freely even if I want to thanks to the damn paywall. So as an author I offer condolences. I have to give the society copyright if I want to be published so thems the rules. Ugh. Fail
This is interesting. I'm sure it varies by publisher. Let's look at three.
1)
This link describes Elsevier's policies, which covers many top journals and whose behavior is considered to be among the most aggressive by publishers:
https://www.elsevier.com/about/policies/copyright. Their policy clearly states that authors can access their own work, and can even share it for "Scholarly Sharing" even for subscription (non open-access) work.
Also interesting is that if you work for the US government and a few other organizations, the copyright does NOT transfer to Elsevier. The work goes into the public domain.
2)
IEEE's copyright rules are actually worse, IMHO, because they do require transfer of copyright in all cases:
https://www.ieee.org/publications/rights/copyright-policy.htmlHowever, even under the IEEE's draconian policy, authors transfer the copyright but are granted rights to use their own papers, make copies, and reuse the material.
3)
The ACM's policy is different still:
https://authors.acm.org/main.html. It gives the author the option to transfer copyright to ACM, retain the copyright and give an exclusive license to the ACM, or author pay's to keep all rights and publish in an ACM journal. However, even in the ACM copyright option, the author can still post the pre-print on the authors own home page, institutional repository, or any repository mandated by the agency funding the work, or any non-commercial respository that doesn't try to wholesale copy the ACM.
Anyway, these are just a few examples, but if I had a point it is that policies vary substantially by publisher and you really should take the time to read them. Often, a publisher is not going to proactively inform you of your rights as an author. You've got to read the fine print.