Would it be possible to connect a Nintendo game console to a computer in the following manner? Could this be used by hackers to make illegal?

To my knowledge there are adapters that let you convert an HDMI outlet to an AV outlet, so by this logic it seems that you could get one where the male/connecting end connects to the AV port on an older game system (EG. Game Cube or anything produced before it). You could then use either the female end of the adapter or a separate HDMI cord to connect to a computer via HDMI. I don't know if all computers or laptops have this option, but a lot of newer ones do, and there are probably also separate adapters that make it possible on other computers. From there you would turn on both the game system and the TV, and by using the correct input selection on the TV I would assume that you would have a working connection. Does anyone believe that this could actually work? I'm not in a position to try it myself because I don't have the right adapters and can't really afford to spend money on a gamble, and I also don't have any idea how this would look on a computer screen if it actually did work. But it certainly seems to me that this would be an ideal way for hackers to steal code from games, rewrite the game(s) in their respective program, and/or make and sell illegal copies of games. I mentioned the use of older Nintendo systems because they are easier to replicate, but it could just as easily be done with systems such as Wii U and even possibly the Switch if the right adapter was being used.