I think Microsoft risk a lot with bundling software these days. OK, there is no longer any major alternative players (OK, OO/LO open source alternatives but not commercial) but bundling the defacto word processor software etc into Windows, on say a larger scale (all OEM, Volume Licensing and Retail etc) could run them into problems.
I always thought notepad and wordpad were a bit yesteryear since Vista onwards... a lower end version however means no one is going to bother upgrading as even I have rarely used more than probably 1 in 5 features in any one working week.. so wouldn't need to buy the software.
We know about IE and WMP causing problems in the past... however, surely an office package would be a bigger problem than a web browser and media player?