Merry -- Your point of order well taken. Interesting to know the origin of 'glass ceiling.' My hat is off to Wells. Actually, my specificity with regard to 'U.S. business world' was meant to reflect direct knowledge since it is within that realm (?) I function.
I haven't flown in elite cabins abroad much but I've gleaned from this board (including your postings) that outside the U.S., first class can be quite special. So, it occurred to me not to make assumptions; hence, the focus on my direct experience.