USERWAY for Accessibility / ADA WCAG Compliance
I was researching website compliance Americans with Disabilities Act Compliance (See also WCAG compliance). I see the go-to plugin seems to be Userway.org. $490 per year for the pro version with substantial compliance. I think it might be helpful to your customers (and the public at large) if you would promote such compatibility like partnering with the leader (I think its userway) and offering it to your members at a more reasonable cost, like you did with Cloudflare Enterprise. Many people think of this as an optional functionality but apparently 15% of the population has a disability of some sort.
Alex Witkowski commented
I learned they also allow special plan when purchased from their free plugin which gives the paid coverage but for $190 instead of $490, specifically for Wordpress sites with less than 10K pageviews per month