Well - when you open android market, you see ebooks advertised. That's Play books. If you browse popular applications, you'll see Kindle.
I'm saying this from the point of view of possibilities / easy accessibility. No, iBooks is not an option for Android users, because they have no access to it. They don't care about it unless they have an iDevice - that's all I tried to say.
If you go for a Kindle device, your first option is Amazon of course. Actually a common user will probably know something about Kindle and that he can buy books on his mobile. The details about who they come from and how they work are not that important.
I'm saying this from the point of view of possibilities / easy accessibility. No, iBooks is not an option for Android users, because they have no access to it. They don't care about it unless they have an iDevice - that's all I tried to say.
If you go for a Kindle device, your first option is Amazon of course. Actually a common user will probably know something about Kindle and that he can buy books on his mobile. The details about who they come from and how they work are not that important.