A lot of people in the games industry chase hot tickets like new platforms, new outlets for their games and so on. They’re looking to get the good partnership with the platform owner, to get paid for exclusive content or to take advantage of young markets trying out games for the first time. The reason is that they will get many more sales for less advertising costs than is typical in mature markets.
The latter half of the 2000s have seen many new hot tickets, from Facebook to the iPhone, but in all likelihood we will not see any as big as that for a few years. The smarter strategy now is to focus on single franchise publishing rather than hot tickets.