Aside from the flames that are brewing here, i shall try to
answer your question.
Talent competitions, to many people's chagrins are highly popular
to close friends and relatives of the competitors, thus news
spreads quickly upon their side and one would easily say in Chinese
' yi chuan shi, shi chuan bai '.
Not only that, old folks who wish to catch up to the society of the
youths these days may watch competition themselves. And lastly, its
the ratings.
Dramas in Singapore earn a fair sum of ratings and thus get in a
good amount of profit, but Talent shows, if good, can raise ratings
far beyond Dramas sometimes, and because of that, Media corp would
hold as many talent shows as possible just to gain popularity and
money. That is my conclusion.