You raise an interesting point: if we were the only ones in charge I'd say that a sizable proportion of us, developers, would target Chrome and only Chrome. But we unfortunately have to deal with functional specs and project managers and "clients" (whatever that is) and older browsers that force us to think in compatibility terms rather than coolness terms.
I work for a company where we still have customers using IE 7, so I know what you mean.
But no, I don't want to develop only for Chrome, and these days, you see a lot of that happening on "cool tech", even when there is the equivalent in, at least, Firefox.
