On February 26th, Kindle customers will lose the ability to download eBook purchases directly to their PC. If you want to switch to a rival eReader brand in the future, I suggest that you use the soon-to-be discontinued "Download and Transfer via USB" feature to archive your Kindle library.
It eludes me how people pay to 'buy' something that they cannot download in the first place. If I don't have it as a file on my computer, I don't own it. You wouldn't pay to 'buy' a physical item if that meant only being able to look at it at the store, without the ability to take it home and do whatever you want with it.
Safety eject option locked until subscription is paid. "911. I have a dildo shoved in my ass and my safety eject subscription ran out. Please help!" you know, it sounds crazy and like this could never happen but I say it's just crazy enough it will happen. Look at who the American president is. That's all the proof you need.