With regard the original question about life after SP, I agree with Mick. More and more publishers are taking notice of authors/books who have the wherewithall to make things happen on their own.

I also wanted to make a quick comment on using fee-based/POD publishers like CreateSpace-do your homework exhaustively.

Each one has it's own unique qualities, good and bad. A big component to consider is per book price. The cost at several is way too high to realistically be able to sell your book, and last I checked, Lulu and Createspace are in that group.

If all you're looking for is a layout/printing resource and you plan to give away a book, it won't be as much of an issue. However, if you want to attempt to sell, even from Amazon/your own site, make sure whichever one you choose helps you create the business model you want to pursue.