History has already demonstrated how Microsoft reacts when they are fully in control of technology. How do you think they would act if they are in control of vital Internet search results? Do you think they would serve the interests of the general public or their own pecuniary interests? Do you think they would stilfe search results that are critical of Microsoft or promote true free speech? Do you think if they were the dominant search engine they would use it to leverage themselves unfairly into other markets or compete fairly?
I don't need to answer these questions; as I already said history has shown us what they are willing to do. I think we the users have the final say though. I use Google and Yahoo! and have found that bing results, while typically fair aren't necessarily much better. As a matter of preference I have no reason to switch from Google, et al, and won't, even if the top 1,000 top-dogs switch to Microsoft. If that happens they lost me, I didn't lose them.