On one hand, I currently would get KEGG enrichment from Enrichr, and previous KEGG annotations should still be there (they list the year multiple times for many databases). It also looks like there are also still many free functions on the KEGG website, but maybe I need to look over everything more carefully.
On the other hand, I think having a variety of free programs available for various purposes is really important for research. While I would probably benefit from brainstorming alternative solutions for funding public goods (I would personally consider KEGG a public good, like most bioinformatics software / databases), I would strongly prefer seeing links for donations (kind of like some art museums) rather than paywalls or licenses. I would also prefer to pay for training, rather than paying for a subscription that limits access to the underlying information.
So, I am disappointed to hear that KEGG is adding some subscription options. For example, in the case of COHCAP, I would say I am providing a relatively direct solution to a problem (with straightforward statistical analysis that uses popular open-source languages / packages / libraries), and I think it would be better to have a freely available version with delayed/minimal support, rather than leaving the open-source license (although, of course, I would prefer an open-source solution that still provides timely support to users). Likewise, I think the inability to guarantee that KEGG (or COHCAP, etc.) can provide what is needed in any given situation means that there is some benefit to the lack of liability with an open-source license (in addition to helping justify an organization's non-profit status, if that is necessary), but I think considering something a public good should be the primary motivation. However, that is just my opinion as an individual :)