Because they haven't sold enough WP7 to anyone to waste their time trying.
Why can you use that line when Windows is involved, but not with Linux? Every time someone says that Linux is secure because it doesn't have enough market share there is countless amount of people saying that it isn't so. Selective much?
With Lumia falling flat in Europe Microsoft needs all the enthusiastic modding fans they can get.
Actually, Lumia is performing really well in Europe and Australia. In November it was on top of sales charts of Sweden and Australia and in December in United Kingdom, beating both Android devices and iPhone. Nokia and Microsoft did really well in Europe.
"Evil" is things like crushing free speech,
Google does that too.
In Germany and France, a study reported that approximately 113 White Nationalist, Nazi, anti-semitic, radical Islamic and other websites had been removed from the German and French versions of Google.
After an instrument has been assembled, extra components will be found on the bench.