Come back and comment once you are educated enough to understand concepts such as "representative sample."
ISkratch, if you have a better place to survey please inform us. As it is the forum is the best place available. No, it isn't a particularly representative sample, since at the one end it will likely have more people who really enjoy the game. However at the other end people are far more likely to come to a forum if they are having technical problems and want a fix. I'd say if anything there is a greater percentage of people with problems here than in the Civ playing population as a whole, simply because if the game works you may be playing it rather than browsing the forums.
A quick search has turned up a couple of polls, so lets have a look at the percentages.
http://forums.civfanatics.com/showthread.php?t=134697
One of the earliest polls to start with, simple yes or no to whether it's working. 74% Yes, 26% No. This is a fairly high percentage of people for the game not to be working for it's true, I personally agree with you that the sample is not representative, though I would say it is biased towards no, but let's work with this. This poll was from late October, so Civ 4 1.0. Is it acceptable for a game to be released with 1 in 4 people suffering problems? In my book not really, but it's no worse than any other game at release that's got as good reviews. I am always faintly surprised when a PC game loads and runs perfectly, especially when it's brand new, and I doubt three out of four of the games I've bought have worked out of the box.
Onto another poll from a few days later.
http://forums.civfanatics.com/showthread.php?t=136201
Three options here on whether Civ 4 works, of Yes (56%), No (15%), Not very well (29%). This again predates the patches. This is to be honest about what I'd expect from a new game.
Now onto a more recent one, started just before 1.52 came out, but probably most of the people voting had actually got the patch by the time they did. To be on the safe side, we'll assume this includes the fixes included in 1.52.
http://forums.civfanatics.com/showthread.php?t=147891 Rather more options here, but boils down to:
Worked from day 1: 54%
Didn't work but has been fixed by patches, etc: 25%
Didn't work, has been fixed to some extent but could use more patching: 14%
Didn't work and still doesn't : 7%
I'm quite surprised at how well the "did it work from day 1" matches the previous poll, but it seems to boil down to this. Just under 80% of people have a perfectly running game, after 1.52. 14% can play it, but could use some improvements since issues are only passably fixed. 7% still can't play and you have my sympathies, but that isn't anything out of the ordinary for a PC game, and at least Firaxis will continue to release patches.
It is this last point I want to comment on. What do you want Firaxis to do? The game is being patched, and they've fixed the majority of the problems. Unlike many companies they will keep releasing patches as long as there is a major demand for them. What more can they do? Invent a time machine and edit every copy of Civ 4 that has been sold in the past? Recall the game? That'll annoy at least 80% of the people on this forum, and probably much higher.
Blaming Firaxis is to put it mildly, misdirected. Firaxis didn't decide when Civ 4 was released, Take 2 did. They moved the release date forward a month and Firaxis had to fudge some things to meet it. Firaxis have, as you've said, already put out two patches to help get the game running properly, and I don't doubt a third is in the works. Whether it was buggy or not at release, and whether or not it should have been tested more, Firaxis didn't have the final say. Take 2 are the only ones that deserve to get the blame.
As for the game reviews, how many times have you seen technical problems mentioned in a game review? The game currently doesn't work to any useful extent on (probably an overestimate) 10% of computers. The same is from my experiences true for any other PC game, and there aren't going to be any patches to fix most of them. As I have emphasized Firaxis are much better on patching than most companies. The forum has done it's bit by telling them what needs fixing, but I don't think that any amount of ranting, threatening boycotts, inundating them with complaints or throwing tantrums is likely to get another patch out any faster.
EDIT: Nilrim, if your boss screws up is it your fault? The developers don't deserve the abuse they've been getting on this forum for mistakes made by the company that bought them. Even though they have been bought by Take 2 I think the development team is still basically the same people, and so the distinction between Firaxis and Take 2 still stands. I too would like to see them with a different company in the future, though I admit I'm not optimistic on that.