> In fact I'd say that academics these days never have time for writing and that most other successful authors I know are independent.
That’s a weird thing to say, academic careers revolve around writing. On the other hand, their output isn’t in book form nor aimed at more general audiences. They do author some books sometimes, but maybe more like textbooks. There is a lot of “write what will sell” thought that goes into being a successful author, academics are less immune to that (they still have to do research that will sell to funding agencies and write papers that they can “sell” to peer reviewers).
I was asked to write book (for commercial selling) awhile ago and during exploration found the process a bit off putting (ultimately decided I didn’t really have anything to contribute). I began to look at a lot of books on the shelve in the programming section in a very different mode cynical light afterwards, a lot of books were equivalent to clickbait (timely on hot topics, but of very low quality and not contributing much to the field). There are still gems, but a reader has to be very discerning these days and not buy on title alone.
I enjoy academic papers more, but even in a highly rated conference proceedings, you have to watch out for academic clickbait.