Not held hostage by a single supplier
Fixed maintenance costs sometimes become a golden cage: you keep paying because switching seems expensive or complicated. With an HTML website, that is not an issue. The technology is universal, so virtually any web developer can take over your site — there is no closed system around it that ties you to us or to a subscription.
We are happy to keep your site up to date, but you choose that because it works well for you, not because you have to. That freedom also keeps the costs fair.