Excellent points all around.

It's like Home Theater in a Wall (HTIW?) instead of HTIB, but with the same qualitative inference.

Being an installer/consultant has some appeal because you'd get to live in hobby-land. OTOH, fishing wires is just too much freaking work. And I just don't want to spend time in the crawlspace or the attic. No, thanks.

It's one of those "pick any two" arguments with Sounds Good, Inexpensive and Unobtrusive.