The guy who managed this had been preparing quite a bit. Furthermore simply being a game developer does not make you inherently more skilled than amateurs, some of the mods released for various games should have proved this outright (especially considering some of the best games ever made have been made exclusively by modders and ex-modders), they worked exclusively on consoles before this and repeatedly told people they did not have very good experience with the PC. They didnt get another company to do the port to reduce costs, they did it themselves because they did not know how well the game would do and spending a lot on the port for it then to flop would have been very damaging. The problems with the game come from it being a rushed port done by an inexperienced team.
To add to this you get the DLC for free. This is both because you waited so long and because the port is not high quality. From Software is clearly trying to be your best friend, if they were trying not to hurt console gamer's feelings they wouldnt charge 1600 MP, something like £15, for the DLC you get for free. Furthermore, if console gamers cared that much about graphics they wouldnt be playing on console. This conspiracy is just plain stupid.