Sony learned its lesson. Will Microsoft follow?

Here is something I took notice and saw some similarities with Microsoft. First the news:
"....Because we had a music business, Sony was reluctant about introducing an iPod type of new product but we (learned) many lessons," said Ken Kutaragi, executive deputy president of Sony, speaking Thursday at The Foreign Correspondents' Club of Japan.
Source: Sony learned its lesson in digital music, says exec

And here another one from forbes.com
"...Kutaragi said the entertainment electronics giant missed out on potential sales from MP3 players and other gadgets because it was severely proprietary about music and entertainment content."

Sony was reluctant because it also owned music and movie units and were worried about content rights. It also owned many proprietiery formats that it wanted to promote. But it realized it is not good for the company. But Microsoft has't yet learned its lession. For the fear of losing Windows business, it is not shipping any of its applications in other platforms. Oracle or any other applications companies don't have this problem and build their applications in all popular OSes.

I still would like to see Microsoft split into OS & Applications business so that one division is not pulled down by the other and are free from obligations to the other business and can work on building world class software w/o the external push/pulls.