[bayindirh]

Many ebook vendors I use (InformIT, Packt, No Starch Press, Pragmatic Bookshelf, Manning, O'Reilly Back in the day), work at piracy-by-default mode. Only InformIT watermarks PDF copies, and there's no DRM to talk about.

So, when you have good content with reasonable prices, people also come and buy.

Also, there are some eBooks in Kobo store devoid of any DRM. So, publishers are not forced to use DRM on Kobo, as well.