tetrominoAs much as I love tf2 and want the community to grow, why should Valve invest time and money where output is relatively low? There's really no moral obligation for them to put support into an 8 year old game besides to make money. If Valve saw tf2 as a franchise where they could profit through the competitive scene then they already would have invested in it. That's what they have economists for.
there's a lot more to it than just adding support or whatever to the game tbh as far as supporting the comp viability of tf2
retooling the game to be 6s or even HL viable is a big ordeal that is going to piss off a shitload of people, compared to making a new CS or Dota game, where from the ground up the casual community is told to kill itself. as it is now, remaking tf2 to actually be a good esport would require changing almost everything about the game as it is, even in 6s or HL because the game is dreadful to watch right now. maybe tf3 or whatev could have a shot, but there's too many issues to bother fixing with tf2, when that effort could be put into a different project that would not make pubbies mad, and not make comp players mad, and would actually be interesting to watch