You really need to have Zynga shares to say that kind of things. Recent reports are indicating a decline in Zynga profits with their new customers (-150$ each) and they aren't at the top spot anymore. IMO, EA is in the best position to take the crown from Zynga's head when they will exhaust their remaining fanbase. With their franchise (Sims/EA Sports/Hasbro deal) and studios (Popcaps/BlueFish) they have everything to defeat Zynga that is stuck with some very popular games, but struggling to create brands (MafiaWars 2) and only using the same formula.
Let see when they release the next COD (~9 months) how it turned out. IMO it's an interesting experiment.
But right now, they don't care about those 500k sales on PCs, these are peanuts. They are going for the big bucks.
Let's take your example about Deus Ex. Eidos Montreal did the console version and the "upgraded" PC version was made by a 3rd party(Nixxes). If we look at the sales using the site VGChatz ([www.vgchartz.com]) they summarize the first week as:
Deus Ex: Human Revolution (X360) debuted at number one with sales of 348,000. The PlayStation 3 version debuted at number three with sales of 229,000 and the PC version at number five with sales of 81,000.
We are talking about a good game that had a fantastic launch on PC (Skyrim, B3 and MW3 do fall in this category for 2011 IMO) and even there, it only has 25% of 360 sales, 14% of all consoles sales. They put a lot of effort (read money) on the PC version and in the end, it doesn't "worth" it.
I agree that using piracy is a cheap excuse. However, if I look carefully at your country demographic, I don't even think that it is a market that the gaming industry is trying to conquer with all due respect. When they talk about piracy and how it hurts them, they mainly talk about potential consumers, not families with 500$/month revenues.
On a more personal note, I see in your other comment that you plan to work in the gaming business. The first thing that you have to remember is that it is a business. The day it will struck you, you might see your dreams fade and become a deluded developer (I saw a lot of them) or understand the game and deal with it (you may already be aware of it btw). It's hard, it's painful, but it's also a very challenging domain with full of surprises. I can't that it is not fun, but be prepared to be shocked by the business :)
Well "maybe", but they might not buy their PC FOR gaming. The console market is mostly (like 90%) gamers that want to play games. If we take the PS3/360 numbers, we are near 100M. For PC, you have Billions of users but only a fraction use their PC for "hardcore" gaming (lets put Farmville in another category). The most successful digital distributor on the web is Steam and it just got 5M players at the same time. Their is more PC players than 5M and I agree that PC gaming is a bit snobbed by industry leaders right now, but the market isn't there. You have a game that will sell 3M copies on PC and only 100k on PC, why waste money on a small market.
Also, releasing your game on PC and consoles at the same time can hurt your consoles sales since some people will only pirate the PC version (since pirating PC games is easier than pirating consoles games).