Would onlne multiplayer games pull the largest share of the revenue stream? Well, I have to concede that may very well be the case, at least initially. But I also think saturation would occur. Enough online multiplayers competing for the time, yet not everybody likes online multiplayers. So the segment of the market that likes the online multiplayers has their time split amongst a growing number of muliplayer games. Eventually that evens out with the games that take 10 to 16 hours to complete that aren't online multiplayers.
Personally, I prefer games that have a certain level of replayability and I have no interest in online games. Of course, with the low post count I have, yet I've been on VGChartz for many years, it should be obvious social things aren't my cup of tea.
But with the developers able to make changes to it even after it's been distributed, more games can be more replayable. That variety could very well compete against "random people" who you are put up against in other games to keep your interest.
