the analysis vis a vis TAG vs. LAG's is simplistic and not correct.
many players have a skewed sense of perspective because they see on TV final tables of tournaments. the plays that are positive EV in that case are not necessarily reflective of the play that GOT those players are
TAG's and LAG's can make money...
i am a profitable tournament player, as well as a profitable trader. the similarities between poker and trading are amazing to me.
for me, it is all about playing the other player, not just the cards, understanding implied odds, and having very detailed statistics on my opponents
I play a pretty TAG style and do very well in Sit and Go's and MTT's, so don't tell me it doesn't work. one key is having a style that adaps to your opponents. if you are playing mainly LAG players, then a TAG style is beneficial , and vice versa.
most traders lose money. so do most poker players.