Koru - 4:26 pm on Sep 2, 2011 (gmt 0)
They strive for accurate data so allowing violations is against their goal, free service or not. Google webmaster tools is also free, sitemap submissions are free, snippets are free--free because they all help google get better data.
And it does have some effect on financials too: adwords are displayed on product search pages...but it's often a lousy place to advertise due to the scam-my or inaccurate listings from feeds.
Hopefully they do listen and September 22 will lead to changes but letting September 1 go by without a hint of enforcement doesn't augur well.