Ultimately, successful products are determined by customers and by product managers and their executives, and it turns out there is no one-size-fits-all approach to even basic UI programming because everyone has an opinion.
Not to mention, as an example touch became a widespread new UI paradigm in the last 10-20 years.
simple problems easily becomes complex in mainstream contexts.. due to bazaar like soil. NASA had to solve one immensely hard problem but they owned the context. Vertical integration if you will.