No, it is the other way around. There is no spoon^H^H^Hstructured data. There is only text.
A big part of the Unix philosophy is based on the idea of outputting text and accepting text as input. You might want to consider reading "The Art of Unix Programming", which has a nice explanation about this.
Don't get me wrong: I understand your point and I know what you are trying to get at. There are things like the interactive interpreters of Ruby and Python, which can be used as a shell, but they are not as friendly for basic tasks as Bash is. Try and change directory, for example.
Also, using objects in a shell is not all-that. If only your shell supports this, on Unix, you would be at a loss. All the standard Unix text manipulation tools would have to be altered, like grep, awk, sed, etc.
I think there has been an attempt to create something like this a few years back, but I can't remember the name and I haven't heard about it in a long time. It's probably not going to take off.