Microsoft is always late to the party when it comes to consumer products, it almost always a "me too" situation rather than being first, with Windows Mobile being an exception I guess, but they failed with that. They had some early pokes at PC gaming but failed there as well..
Xbox was also late, but they got lucky with the PS3 and the product stuck somehow..
It's hard to compare them to Sony because for them, PlayStation is extremely important and it carries a lot of weight. I guess one could argue that PlayStation is similar to what Azure or Office are to Microsoft in terms of importance, in the sense that if Azure wasn't doing well it will absolutely reflect on Microsoft's financials, and if PlayStation is struggling you will absolutely see it reflected on Sony's stock price.
There is A LOT of pride behind Sony's TV division, they will get rid of all else before having to let that one go...