Two things.
1.) The Steam delivery model is the wave of the future. It's how piracy will be fought in the coming years. That and "the cloud," I think, are going to be the next big thing in the delivery of entertainment media of all kinds. For years, the entertainment industry has had to deal with a hybrid system of "ownership" and "licensing" which has created a belief in the consumer's mind that they "own" songs, movies, books, games, etc. They don't. They have licenses to the content, and ownership of the physical medium on which the content resides. With the "cloud" or "Kindle" or "Steam" approach to content delivery, that notion gradually erodes to simple licensing. Once price points are established and the consumers get used to it, it'll be the dominant model for a while.
2.) I came of age with gaming in the early 90s. I was a teenager then, and remember walking into Electronics Boutique or other similar stores to see what titles were available. Back then, there seemed to be more variety of genres, but there were also PLENTY of crap games. What was different, however, was the marketing elements. You didn't have as much internet access back then, nor did you have as many gaming review sites at the time. Mostly it was copies of PC Gamer or PC Magazine that held reviews. I gave up on PC Gamer around 1997 or so when they gave Star Control 3 a 90-something score. That was my first encounter with shills/hacks as reviewers. I still read game reviews, but I'm a LOT more careful about what I believe anymore, and half the time I read them purely for my own entertainment, rather than to determine my purchases. Still, there have always been an abundance of crap games. You just didn't know about 'em unless you happened to pick one up at Einstein Software or whatever. There also wasn't as much centralized publishing (IE: EA back then wasn't the EA of today), which means there was more opportunity for variety.
With companies like Matrix, Paradox, Ageod, and it seems a few others too, these trends may not spell the 'end' of the true quality and detail in computer games, but it certainly doesn't bode well in that respect. I see great potential in computer games from a societal standpoint, much the way certain folks saw great potential in TV when it was young. Computer games have the potential to far exceed the artistic achievements of paper and ink literature, if only the proper synergy between market and producers could gel. At this rate, I dont' see that happening for quite a while. Apart from some of the exceptional modders for various games who really try to bring out each gmes full potential, I see little motivation in general by either the publishers or the consumers to add momentum to the ascendancy of computer gaming to a true artform.
I figure if it just continues to degenerate, there is nothing forcing me to continue to play.
Also true. There's no need to buy crap just because it's heavily advertised.