Sometimes publishers and developers are akin to the most fiscally irresponsible among us, and often resemble the family down the street- living far beyond their means.
However, when certain video game publishers are worth a few billion dollars, I'm inclined to believe the poor mouthing is to gain sympathy of rabid devoted fans, and subsequently their wallets. If anyone is muscling these developers out of money, it's themselves or the publishers.
Theoretically, this is good for the company and good for the consumer. New games come out with even higher budgets and the developers and publishers put out "better games". Unfortunately, this is not how it works. There's a few good games here and there, but the majority of games released are now short, uninspired clones of other successful games. Poorly done clones.
The theory only works if "the industry" continues to bring high quality products to the table. To summarize, I believe this lapse in sales growth and poor mouthing a result of people 'voting with their wallets'.