In any case, these seem like two unrelated changes (West Coast culture of looks-acceptance coinciding with a global telecommunications and searchable data storage networkb that feed existing culture of lack of words / deeds acceptance).
Around 2000 or so GS relaxed the dress code, and, to compete better with tech in hiring, even put a foosball table somewhere in their NY headquarters on 85 Broad Street. Then the dot com bubble burst, and the foosball table was gone rather quickly.
