The problem is that the original image of the text is "in front" of the actual digital text of the PDF.
Figure 1: How layers are stacked in a PDF
PDF is composed of overlapping visible and invisible layers. OCR attempts to use algorithms to identify text placement and size, then place text objects under the original images of the pages.
See these ...
Yes, you can. In a modern Kindle device you can select the formatting and left-justify it:
But this feature is just available for books you purchased from Amazon. Some older books don't have this feature, but I believe they are reprocessing everything. You can check in the book details if enhanced typesetting Is activated.
You can't do it with your own ...