Please don't take people for idiots, photoshop won't be running on your ChromeOS.
It is possible to write software like photoshop for ChromeOS, thus it is a real computer. It's just that no one has. Nobody has written this kind of software for Plan 9, and a computer with Plan 9 is still a real computer.
Spending a grand on a piece of machine that people rarely write software for is a bit of a pickle.
I agree with you, but this is a different argument.
You might as well just link to a Chrome-compatible VNC client and say it can run anything.