The cloud used to be the future when forum-users thought Sony would have the upper hand on it, because they paid 400 million USD for Gaikai.
Now that they realise that the IT-infrastructure and cloud computing technologies MS offer are vastly superior than anything Gaikai could have ever been, it is just a fad / PR talk or something these users try to make fun of.
The reality is oh so different. The fact that Nvidia, the ones making money from selling you expensive GPUs, try to use the cloud for their products gives you an idea how important this will become. Maybe not in the next 2-3 years, but the foundation will be made for decades to come.
This is like online multiplayer on consoles. At first there were only a handful of games supporting XBL (or Dreamarena... but yeah... XBL) Heck, EA even blocked it. Now it is an essential part of gaming and the game they sell. Same thing will happen with cloud computing for games. Yeah, not everyone will be ready from the start, but not everyone was ready when XBL required broadband in 2002 either.