That's how you get stuff done. You build a coalition of people whose goals, if not necessarily pure motivations, align with yours. It's not like you're going to get "I support everything Google does, now and forever" tattooed on your forehead because you align with them on this issue.
Or not even goals. Two parties vote against a tax-reform package - one voted against because it disagreed with increased mining taxes and the other voted against because the increased mining taxes was too low.
It's really splitting hairs, but I'd argue that's a commonality of goal (rejecting tax increase), but difference of motivation (too much/not enough). Love the example, though. Politics makes strange bed fellows.
The perfect is the enemy of the good.