That was the 747s innovation. It was bigger. Have any of you been on Concorde? It's awful, really cramped, you put up with it simply because you could go to JFK and be back in time for tea, not because it was a nice place to be. But a 747 (especially in 1st) is a very very nice place to be, and it can go to all the airports that Concorde can't and it was a fraction of the cost, and you could get more self loading cargo on it, and it was cheaper to run...
Yep I flew on it to New York, also on G-BOAD actually, and as shown from the picture, it's not exactly "awful"! The windows are small yes, but so what.
Having also flown First on 777s and 747s I'd say if anything they're more claustrophobic, particularly in seats 1A/K on a 747 where you're staring straight at the bulkhead.
Being smack in the middle of the economy cabin isn't exactly pleasant either, I'll take Concorde over that thank you. And if you honestly think that's a nicer experience because the ceiling's further away then you sir, are a moron.
747s aren't exactly known for being able to fly everywhere, the whole c10000ft of runway is rather limiting! Yes it's proved more ecomically viable in the long run, but it wasn't as technologically advanced.