Heart and soul performance machines are being killed off by the manufacturer's bean counters, environmental regulation and also the consumers. The bean counters are there to ensure the manufacturer turns a profit, and while you can have profit margins in a sports car, it takes volume to recoup the R&D cost of building a bespoke platform that has many particular intricacies for that particular vehicle. The volume on a sports are typically doesn't exist to earn back all the R&D, hence why so many partnership vehicles these days. Some vehicles reside on nameplates that can sell for exorbitant amounts of money, meaning it can be viable for a manufacturer to turn a profit (Ferrari, Lamborghini, Porsche) although at least the latter are owned by VAG who allows these cars to be built since Volkswagen makes up the volume. Environmental regulation chokes off the exhaust, both sound and pollutants, with pre-particulate filters, and turbochargers in an effort to keep power while reducing displacement. Lastly, the consumer dictates how the car needs to be built to satisfy the largest number of buyers. Electric power steering ties into parasitic loss (fuel economy) but the request of autonomous parking and lane keep assist requires this technology. The desire for AWD hurts RWD sales and makes cars on average heavier. Consumers want cars that are quiet but also fun to drive, you can't truly have both to a full extent. Once you add refinement and sound deadening, coupled with noise restrictions, you can't expect to hear that beautiful exhaust unless you open the windows, the cabin is just too isolated. Manual transmissions are dying in a threefold mission - pursuit of performance (PDK/DCT is simply faster), low volume sales on manual, and costs of developing multiple transmissions. If you can bolt on a one size fits all transmission, in some vehicles depending on sales split, it'll just be more economical for the manufacturer to put an auto in all cars.
Let's not talk about the "SUV" crisis that is going on right now as well, basically killing all cars in general.
We reap what we sow.