Could it be that bookmarking is something people often think they need, but actually, even if they remember to bookmark something they will rarely revisit their bookmarks. What people really need is a way of recalling instantly every snippet of information from every website they have ever visited on any device in a timely fashion. Which sounds tricky to implement.
Chrome's poor bookmarking must be intentional to push people to search – other browsers poor bookmarking I can't as easily explain – but some browsers used to have better/more useful interfaces for these kinds of things.