No that's not enough. A subtle, sharp chess position is too
complicated for a TV audience to be excited by. The position in the
board when the bet is offered has to be "mate-in-one", like in poker,
where both players show their cards and the higher one wins. There's
tension in that kind of poker position because until the "move"
(revealing the cards) is actually played, the players don't know what
the position is. Other than that unknown factor, it's pure simplicity.

Chess has the disadvantage that all the pieces are on the board "face
up" where everyone can see them. Instead of getting tension from an
unknown but simple position, chess has to get it from positions that
are too complicated for anyone to understand. That doesn't play too
well on TV.

It`s not about the complication of the game - of course chess is more
complicated than poker even from psychological point of view - but it`s
about money involved : even when they are smaller sums they are more
visible. The money is usually on the table and every kibitz is excited even
if poker players play for small sums. Poker is like one of those
brainwashing TV competitions when one wins visible money.