Wow how did I not think of that, surely the pattern of services getting worse to extract more money from users is due to someone saying a dirty word on the internet.
Platform decay is more accurate becasue it's not about general worsification, it's about platforms specifically. I realise that "platform decay" doesn't sell books but it's perfectly usable in ordinary speech .
"Writer Cory Doctorow coined the neologism "enshittification" in November 2022, though he was not the first to describe and label the concept[1][2]. The American Dialect Society selected it as its 2023 Word of the Year. "
ADS said: “From the time that it first appeared in Doctorow’s posts and articles, the word had all the markings of a successful neologism, being instantly memorable and adaptable to a variety of contexts.”