But if assets don't mean anything, it is more like being customer than stock holder.
It is like two persons eating different amount of hamburgers at McDonald's. That doesn't make them share holders of the company.
indeed. as a general matter, one ought to have at least a minimal understanding of companies before drawing analogies to them.
as an aside, 'corporate' does not mean the same thing as 'limited liability' in the united states or any other legal system. you can have limited organizational liability without incorporation, and the term 'corporation' does not as a general matter mean that shareholders are exempt from liability. (there are many examples of 'corporations' without limited liability for shareholders.) it's also not clear what 'We aren't about limited liability here' might even mean in this context.