You have correctly identified that editing, distribution, publicity are problems for self published authors mostly because they don't have the money or will to

You have correctly identified that editing, distribution, publicity are problems for self published authors mostly because they don't have the money or will to pay for these services. All of these currently are fixed/upfront costs invested into a book before you know the level of sucess it will have. If your company pays for these work they have to get paid back, which is going to have to come out of the sales stream from the book which creates a selection bias problem. If you can crack the problems around the cost for providing services or how to pre-sift through books for a population more likely than average to have above average sales that would give you a way to engage in what you've described. There are lots of Books about running a publishing company but no websites. I'm working on a publishing focused startup and have been in the industry for the previous five years.