That reply shows you don't know jack. Be in a business for 45 years where you make a new product almost every week, then get back to me. Its like talking to 16 year old dropouts.
Are those products made for a narrow market like Mopar blocks? I would be surprised if Mopar parts make up 10% of the performance market. All businesses/manufacturers have to make new products & if there's no R.O.I. that product is dropped.