In the last decade lots of satellite businesses built around the games. I have to say, especially since the boom of free-to-play, late 2012. One of them is analysis and break downs.
There are lots of services that offer data and screenshots of existing games, successful or not. A company or a private may pay a subscription to get access to those and save time in theory. Make better forecasts.
I have learned over the years that business managers hate uncertainty. Also if it is almost impossible in games to predict a success, economists and marketers hate what we game designers love the most: getting lost into a forest of creativity. Iterate, until the game is perfect. Business people prefer instead to rely on data from other companies, other contexts, other teams and follow their lead. If you want to work as a game designer for the industry, you have to deal with this bs.
I believe instead that every context is a different context. That our life is short, like very short (probably you will have around 40 summers left, think about it). It’s better to create something unique and maybe fail. Than create something that somehow already exists… and then fail!
It’s interesting to read break downs and analysis, but do not forget: those games we love are made by other people in other countries with other budgets and history. Never forget this and focus on put your own voice out. Own your thing.