The truth of the matter is that we've all heard and have had our own conversations in which something about any and all versions of DS was disappointing. When it comes to disappointment about DS, it's hardly limited to what some might say with regard to the Depp/DS film - as a perusal of dozens upon dozens of topics here on the forum will attest.
And going back to the Batman analogy, just think of how practically a whole generation considered that franchise completely synonymous with the beyond goofy '60s Batman series. Yet, did that stop other more serious versions that came along, whether they were theatrical, animated, or what have you, from taking off? No. The truth is no one version of anything makes a franchise sink or swim. If someone makes a good new version, people will come, regardless of whether it be a humorous take or a serious take. And for more proof of that, just look at, say, how many serious as well as humorous takes there have been on the Dracula story. And the future is no doubt going to bring numerous more of each. And each will be their own thing, just like Francis Ford Coppola's serious Bram Stoker's Dracula (which I personally dislike but many people love) and the humorous Dracula: Dead and Loving It (which I personally love but some detest) were each their own thing.