Is it just me or do certain studios seem to downplay their legacy too much on the websites? I get the feeling some of the fans and historians value the classic rooms more than the actual owners, and of course business is existing in the present and looking ahead to the future, but damn if I owned a studio with that much of a legacy and legend, I'd have classic photos pasted all over the website.
One studio that did that was Sunset Sound, if I'm remembering...good Doors, Stones photos and the like.
I think it sells the studio as much as listing all the digital gizmos they have available. Example: They say: Brian Wilson recorded a few Smile tracks here! I'd say: SOLD! Them: But we haven't listed which versions of ProTools we have and which converters we use... Me: I DON'T CARE! Book it.

You're absolutely right, and in my opinion, it's a valuable source of both promotion, and possibly even income, wasted. I know it's not like a huge market, but if these places maintained museums, there are people that would pay. You'd have to track down some artifacts and photos and put it all together, but if you set it up right you could get away with charging 10-15 bucks a head for people to come in and look at the museum, and then you could charge more when the rooms are available to see. I mean it's crass commercialism, but at least it gets you in there. I don't mind being sold a bunch of hooey to be able to go into something like, say, the tower of London, which they have to turn into some kind of horror show to get people in there. I don't mind being taken advantage of to get into Western 3, either.