I think in the times of internet "journal access" is not really the practical bottleneck anymore that someone can and will read your paper somehow, rather the criterions Allure has listed.
The bigger technical bottlenecks for someone to spot and download your paper are:
- is the journal indexed by google scholar, scopus, ISI, sci-hub (lawsuit with Elsevier to my knowledge)...
- can someone easily find your research via above tools by few keywords without search operators (most people still don't use operators!!!)
- do you actively disseminate your publications on researchgate, private/institute website, conferences, so researchers could become aware of it
So these points will converge to "access/visibilty" of your paper and the main bottleneck is that there is much more noise around the information you want to find nowadays and often you cannot restrict yourself to reading half a dozen journals in your field to stay up to date, especially on interdisciplinary news. I have changed and strengthened very much my kind of literature search over the past decade due to this fact.
For a young researcher it's in my opinion also more important to bring your results to more journals at the beginning of your career, get invited to review for them and not look too much on impact and accessibilty, you have to build a network and I think professors can have very different search and readings habits in their limited time in comparison to someone working solely on one topic (postdoc, PhD). At least my Professor and me often recommend very complementary papers to each other :-) I often read much more experimentally linked literature, while he interdisciplinary/thematically.