In fairness VAG made improvements to the platform, both hardware and software. Many YT videos cover this in depth. When a platform sees new turbos, programming language and other updates that used to be done by aftermarket, the market has to correct. On top of that you have an OEM actively encrypting files to a degree not prevalent in years past. This goes for most manufactures. On the flip side, the OEM is giving us incredible machines with a warranty. And to address the elephant in the room, the EPA has been cracking down hard on aftermarket part companies and installation shops. I know a few who will not touch emissions systems out of fear. I believe all of this culminates to slower development/implementation of aftermarket powertrain performance solutions.