Well, it's kind of understandable from a business perspective why google would do this. If windows devices become huge then a side effect of that will be increased bing marketshare. Remember, google is an advertising company and they need their browser to be popular as its where 95% of their income comes from.
Having said that, it's still a shoddy business practice and I hope it backfires on them.
My prediction threads:
Wii U will sell under 40m units (made on 14th September 2012)
PS Vita will sell under 20m units (made on 30th September 2012)
Wii U will sell under 7m in 2013 - I was right