Everyone is born creative; everyone is given a box of crayons in kindergarten. Then when you hit puberty they take the crayons away and replace them with books on algebra, etc. Being suddenly hit years later with the creative bug is just a wee voice telling you, "I'd like my crayons back, please."
Few studios will ever tell you about what they did wrong. Few studios would write a thousand words on it. Fewer still have the guts to take something that doesn’t work and totally scrap it. Few studios are Valve.