I would agree that a huge number of web designers & developers ignore the importance of accessibility. WCAG is the most comprehensive set of guidelines and it should be followed (especially the level A which is easy to catch).
I am also doing my MSc project around this problem and it would be great if you fill out this small survey: http://goo.gl/forms/5D7pqTjcCnbjp7AT2
I'm trying to find out how many web designers and developers are aware of Web accessibility guidelines and how frequent they following them.
Thank you all