The problem here is that the entire concept of 'franchises' is a recent invention - before they were just called 'IPs' (Intellectual Properties), and were only defined as such for legal reason. It wasn't something fans ever needed to be concerned about. Then fandoms began. they began a LONG time ago. I'm sure their were fandoms even in ancient itmes. But they were limited ins cope, because they were limited in reach. If your neighbor lived two days away and their were raiders between them and you, well... you didn't get together with your nerd buddies to talk about the latest adventures of the Argonauts. Fandoms become big when home computers took off, and they became organized, and we made Wikis.
The companies that owned the IPs realized the cash cows that they had and could milk for ever, and thus, the concept of 'franchises' were born.
Your data regarding Sherlock Holmes is irrelevant, because it predates the concept of 'franchise', and thus, no-one even thought about the relationship between one show (or novel) and the next. They were all 'stand alone'. On the plus side, that means one bad movie couldn't kill a franchise, because there was no franchise. In fact, the number of inconsistencies by early scify authors in their series of novels is huge - they changed stuff from book to book, even if it was all so supposed to be the same setting. But no one cared, because each piece was considered a separate thing. It was almost like the concept of a multiverse, before there were multiverses. The internet, fandoms, and franchises - all recent concepts promoted by the big companies - is what made us into 'rabid fanbois', because they wanted it that way. And the downside of having heavily invested fandoms is that when you make them angry, they turn on you, like Bruce Banner after he's gotten sour milk in his morning coffee.
The companies that owned the IPs realized the cash cows that they had and could milk for ever, and thus, the concept of 'franchises' were born.
Your data regarding Sherlock Holmes is irrelevant, because it predates the concept of 'franchise', and thus, no-one even thought about the relationship between one show (or novel) and the next. They were all 'stand alone'. On the plus side, that means one bad movie couldn't kill a franchise, because there was no franchise. In fact, the number of inconsistencies by early scify authors in their series of novels is huge - they changed stuff from book to book, even if it was all so supposed to be the same setting. But no one cared, because each piece was considered a separate thing. It was almost like the concept of a multiverse, before there were multiverses. The internet, fandoms, and franchises - all recent concepts promoted by the big companies - is what made us into 'rabid fanbois', because they wanted it that way. And the downside of having heavily invested fandoms is that when you make them angry, they turn on you, like Bruce Banner after he's gotten sour milk in his morning coffee.