It's same as adsense, and youtube. Nothing is easy, but there is a huge demand for blog content, and videos. Back then in 2016, you could have a quick success relatively, but now it's getting somewhat difficult due to high standards people have, the cost of graphics card, and the number of developers are high. However, getting difficult doesn't mean the demand is low, and the amount you can make is low. The key point is to maintain a routine, listen to your patrons, don't change the genres drastically, narrow down the niche, more like stick to a microniche, for instance if it's NTR, then you should stay on NTR instead of trying to appease non-NTR people too. It just doesn't work as non-NTR people don't like NTR in their games even if they can avoid them somehow. If it's another genre, then you have to work harder to satisfy both groups. not worth at the end.