Many of the teams that still work in print start in print/InDesign.

A major problem that needs solved is parsing that format or a related export format to a convertible raw data format that forgoes some of the noise that can exist in old, reused InDesign and InCopy templates.

A streamlined workflow is very much needed in the industry, but with reduced staffing levels and string-thin budgets you won’t have much success trying to completely change their workflows—never mind flipping them end-over-end.

Print files are often designed first and the copy is often modified to fit the design—at least where appropriate. Otherwise, InCopy is already XML that can be dropped into print files or exported and walked to convert it to plain HTML/ePUB/Markdown/whatever.

I can understand the motivation, but after years in publishing this might be better suited to a digital-first pub than anybody who goes anywhere near print. Those teams have enough overhead to manage! They want solutions, not corrections, to their needs.