Yes, Google made Chrome. Keep in mind that they created Googlebot, and Chrome is really only a "slimmed down" version of Googlebot. Chrome came about because of Googlebot.
I don't think this is true at all.
Or maybe they did it to get full access to the users (having access to your customers through other providers sks), get a more stable web experience (which increases the numbers of all users and thereby the number of google ad viewers), and have more power in the definition of web standards?