Gamer can wait until the day a good game comes out, a company needs hype to build it’s brand for stock holders.
This is absolutely not true, gamers freak out whenever a game is delayed, even for good reason. And people were absolutely causing a huge fuss about whether or not there was going to be an ES6 so they released a teaser to say that it was coming eventually.
The shareholders would only want them to release the teaser if the goal was the sell stock immediately. Any bump in price from the teaser would even out after probably just a few months.