Indeed they would. Only I would say picasa to steam ratio would be 1-to-100. And btw only most rudimentary things work in both! Steam worked _perfectly_ before. And I'm sure would still worked. But now, you can't buy stuff, you can't open screen-shots (because they are popups) you don't see MOTO when joining servers, lots of things do not work. So I would use Steam as an example on the contrary.
I completely agree about the 1 to 100 ratio. Steam is a pretty critical application for wine given its large number of users.
Chris