Sadly, the ‘G’ in WCAG is ‘guidelines.’ It doesn’t have teeth; there is no legislation around WCAG.
Used to be true. More and more government agencies are referencing the WCAG as the standard, and The Revised 508 Standards which sets the rules for government bodies directly pins it to WCAG v2.0. WCAG compliance has also been specifically ruled in various Title 3 cases, which sets the precedent.
There is still lots of legal ambiguity around accessibility, but the ADA definitely looks at web accessibility and WCAG when something significant is brought to its attention
Yes, unfortunately i think you’ve missed a few things.
valid complaints and received a negative reply from a place which needs to follow the ADA might consider bringing legal action or enforcing penalties
I think that about covers it