Many researchers are abandoning Elsevier and for-profit journals, but unfortunately two of the major non-profit technical societies in our field - ACM and IEEE - still seem to view digital libraries as a cash cow that can milk as much as possible to pay for unrelated activities, and they also still charge fees to authors for open access. These societies are hard to escape since they actually organize some of the best and biggest conferences.

USENIX is open access I believe, which is great, and I even think some of ACM's SIGs - SIGCOMM for example - make their publications, such as CCR and conference proceedings, available immediately via open access. (I think they are no longer published in print format, so that may save money.)

Hopefully many other SIGs (as well as IEEE societies) will follow suit, and hopefully government open access requirements will improve the situation as well. It doesn't make sense for taxpayer-funded research publications to be locked behind a third-party paywall.