A quick question: is it okay to have a pirated copy of a book if it has been paid for in other ways?

For example, if I want to "electronic" the paper books on my bookcase at home, I go to a pirated book website to find a related book of the same name, or scan it, etc., so that I can carry it; or I buy the mainland Chinese version of a certain book, but I would like to have a Hong Kong/Taiwan version of the book; or I purchased a version for a certain platform, but for cross-platform purposes, I would like to save the PDF/epub/TXT version without copyright protection. I may watch it on other terminals such as TV, or I may use the software I am used to instead of the official client, so even if it covers the whole platform like Kindle, sometimes it still cannot meet the needs of individual conversion formats.

As another example, Sohu Video, NetEase Video, etc., after obtaining the copyrights of American TV series, open courses and other resources, will “steal” the subtitle files translated by the domestic “subtitle group”, but the translation of the “subtitle group” itself is based on hobby rather than authorization. , so "rights protection" is not easy.

So there is a saying that as long as I have paid the right holder enough money, I have the right to store, hold and use it in any format and by any means (but not sharing it with others). Not sure if this behavior is appropriate?