Australia is extremely egalitarian. I think even more so than the US. In both Australia and the US, you can usually talk to the CEO of the startup directly; they actually like to talk to their staff directly. But in the US, the power differential is usually much bigger, I am more cautious about what I say.
In Germany, there seems to be a more rigid hierarchy and the founders tend to avoid talking to employees directly; they tend to communicate mostly through middle-managers, even in relatively small startups.