Why do media companies keep going for stronger DRM?

I got my dad a bluray drive for his birthday, for use on his Linux Mint 16 system. My intention was to allow him to watch bluray movies just as easily as he watches DVDs. I can read the files on the disk, but no program in linux can read it directly.

Thinking it was a Linux problem, i installed Windows 8.1. Nada. I can read the files, but i can’t watch the movies using Windows Media Player. I went back to Linux and tried again.

After all that, i did some googling and discovered that it was part of the DRM designed to prevent piracy. Thing is, i have enough access to rip the movies as it is. If i wanted to pirate, that’s all i need to do. I don’t. I just want my computer illiterate father to be able to place the disk in the drive and it autoplay.

And it isn’t just the movie industry either. The Games industry has some pretty overbearing DRM. I remember having trouble with Steam anti-piracy day one patches. Everytime i get a new EA game, i have to fight with Origin to install it.

All this because i wanted to buy the products legitimate… and those that want to play it illegally have already got it on pirate sites when the game isn’t even a few hours old.

So my question is, why does the movie, games and even music industries keep going for stronger and harsher DRM? it doesn’t even seem to slow the pirates down, but it does amount to a large inconvenience for legitimate users.