That annoys me. Book typography is a sophisticated art. Selecting a typeface for a book is a skill, positioning it, sizing it and kerning it for that book makes a big difference.

Books all presented in the same way lose a lot of their character. Dickens shouldn't look like G R R Martin.

Sadly, its a bit of a first world problem, most people don't notice it, not consciously. They just get this sense that ebooks lack gravitas or character somehow.