One format, multiple ereaders

I've complained about them before. I'm still not satisfied that any one reader is going to do what I want it to do. My request is simple - read the books I buy.

I don't want to be tied to Sony, Amazon, Chapters, Barnes and Noble. I want to buy books from whatever store I want then read them on whatever device I prefer. I don't want to be tied to one reader and one reader only. There's a hardcover book I've been reading from the library, Harmony. It's a coffee table book full of weighty issues. I could use it as a tray table, it's so big. I'm enjoying it immensely but am exhausted from carrying it. I was going to buy the ebook version but was stopped by the need to commit to a particular reader.

Right now, I'm reading pdf files on my laptop and smartphone. I have a Sony PSR-350 Reader that freezes all the time. It may have been run over by my mom's wheelchair when she was rushed to the hospital a few weeks ago. I'm not sure as I wasn't with her but her purse has a big tear in it. Regardless, the Sony Reader is frozen. I cannot reset it. I cannot power it down. I've been staring at the same page for the last two days trying to figure out how to fix it. I've followed along on all the Sony forums looking for a solution. So far, nothing has worked.

All of the books are saved to the laptop but they were purchased from the Sony store. I can't transfer them to my phone and read them there. I can read from the laptop but who wants to lug that around everywhere? If I replace the reader, I'll have to replace it with another Sony so that I don't lose all of my purchases. That doesn't seem right.

So I ask, why aren't all ebooks in the same format? They've done it for CDs and DVDs. Why not for books?

I've purchased several items from Who Dares Wins Publishing for several reasons. One, I like the way both Bob Mayer and Jenni Holbrook write. They provide entertaining reads. Two, and equally as important for me, I can buy their books in pdf versions. This means I can read them everywhere I want, on whatever device I choose.

They dare. I win.

Why doesn't everyone else offer that option? It's clearly possible.