I like Cory Doctorow. I think his theory of enshittification is useful, but I find his definition flawed.
Why is it limited to platforms? Can't enshittification apply to other things like applications?
Are business customers really required or can that step be skipped?
The platforms dying thing isn't what we are seeing. For example, Amazon is absolutely enshittified. They're not dead. More like undead, continuing to shamble on consuming everything.
I still give credit to Cory for being an acute observer and coming up with a useful theory.