They are confident that their power to focus 24 hours a day will overcome technological and political barriers, and surpass the old guard of existing competitors. (entrepreneur.com)
Some were from existing competitors and some were from companies just entering the foray for the first time. (goodereader.com)
The result is that self - published authors are helping to make it more difficult for existing competitors to survive, or for any new company to enter the eBook marketplace. (consortiuminfo.org)