Sorry mate, but first of all your disrespectful tone is disgusting.
Second of all, Parkasaurus' graphics are a huge reason as to why two people can do this. The amount of time it takes to create the graphics of Jurassic World is well beyond your comprehension, believe me. If these two fellas were to attempt it, they would go bust before they could even launch.
And thirdly, a very similar thing can be said about the mechanics. This looks as though it's a grid based game which, once again, benefitting from it's simplistic art style, which i do not care for in the least, means it's generally a much easier game to program. Why you ask? Well, grids are a much more manageable system, for one. In addition, the scale of that game looks tiny in comparison, even with JWE's currently limiting building space. The whole thing honestly looks like a mobile game for kids.
I also don't see Parkasaurus being pushed for release by Universal. But then, nuances are probably something that escapes you. Heres an idea. If you enjoy Parkasaurus, go play Parkasaurus. If you want to try and insult the devs over things you don't understand, take it to reddit. If you actually want to see the game improve, theres a whole subforum dedicated to community suggestions, but i don't see you there helping. I see you making snide little comments here instead. A great person you are, indeed.
alos for early access its feels like a completely finished Product content wise and gameplay wise.