I like what I like

Be it music, movies, TV shows, books, it all comes down to personal enjoyment, doesn't it? We're all our best or worst critics, so to speak, what I like is my own, though I might share some tastes with others, nobody is beholden to my preferences.
Sadly, the corporate nature of businesses relies on demographics, so you sadly get more and more of what's been successful. Twilight, Game of Thrones, shit I named the two in the same sentence, the sacrilege! But seriously, if something sells, clones will pop up like mushrooms. Ironically, success can't be copied, measured or quantified, despite claims to the opposite. The Dark Knight movies became a hit because of the realistic approach. Man of Steel despite the same outlook, not so much.
I'm pretty sure there are some number crunchers out there, whose algorithms still tell them a clone of Twilight or Game of Thrones should be a success, when the fact is it isn't. It isn't soap, or soda, or chips, if a book strikes home, it does so because people can relate. Not every wizard student will be a Harry Potter, that train has left the station. And if you look at Game of Thrones, how long have the first few books been around before they became a global phenomenon? Of course people wanted to cash in on the success, after all it is a bloody affair with twists and turns, that binds millions to the TV screen. So they (MTV) latch onto a successful novel line, Shannara, and try to replicate the success... try is the operative word here. I read a bunch of Shannara novels decades ago, and while my younger self enjoyed them, they do not shock or bind as much as Westerosi intrigues.
So you want to create a story that rivals Game of Thrones? Yes, but I want to reach out to children and young adults as well, since that is a huge market... So you want to create X-Men: Origins - Wolverine and not Deadpool? To come back to movies. The former tried to serve all sorts of target groups, and became a despised laughing stock amongst fans. The latter stuck to its roots and kicked all kinds of ass.
When writing an original story, I think, people should stop listening to what the charts tell them, but write what they want to read. If all they come up with is cheap knockoffs of other people's creations, maybe they should read more than just this one book series or genre.
I am not talking about writing for a specific IP, that comes attached with so much stuff it ain't funny!
Tastes change over time, as one sees more, reads more, experiences more, what we once thought magical and extraordinary becomes quaint, at best. I, for one, do not want to go back and read what I read two decades ago. I got at least one shelf filled with novels I hoped to but never did read. And now, the thought of picking one of them up makes me want to switch on the TV and watch House M.D. instead.
Tastes change, which does not demean what we liked in the past, it just implies that you now like something different. Hey, when I was discovering music, I listened to Duran Duran, like thousands of other people, now, when I hear a song of that particular band, I get a wee bit nostalgic then shrug and search for crunchy guitars and such... so if you realize you don't like what you wrote or how you wrote something that you haven't touched in years, do not be afraid to update it, the core is still what you love, only now, instead of white chocolate it's dark... you like what you like. Simple as that