It is funny how there are many definitions of Sony . When they opened the bootloader for Android the Slashdot crowd reasoning was "it was the Ericsson part" (even if the Ericsson was dropped) that is the reason they play nicely. But the Sony - BMG rootkit scandal was Sony doing, even if you can seed the same doubt. I think when they opened up their smartwatch (http://developer.sonymobile.com/services/open-smartwatch-project/smartwatch-hacker-guide/) is also Ericsson doing I presume ? Companies can change you know especially if they did some wrong in the past, the world isn't always black & white.
That being said, I don't know if you are aware that a lot of the older people (that made the PS3 decisions) with regarding the SCEE are out of the picture. The PS4 wasn't even developed in Japan or by a Japanese, hell it will even be released earlier in the US and Europe. If you follow the news a bit you will see Sony has a massive attitude change regarding the PS4. You just need to look how they are handling Indie's these days. You must read the humbling interviews with a guy like Cerny, what a chance in comparison with the arrogant Sony.
With regarding the OS a lot of people seem to forgot that Sony also supported linux through the PS2 lifetime (http://en.wikipedia.org/wiki/Linux_for_PlayStation_2) and they never took it back. So it may be that the removal of the OtherOS for piracy reasons was more valid then the so called hatred for Linux suddenly. There are strong opinions about linux, but does opinions never involve the fact of the possibility of that method being abused as an easy way to pirate. Or what should be the real reason that they removed OtherOS support anyway ? Because they hate linus or RMS ?
You are right there should be other mod options like "living in the past" that I would gladly reward you with.