The reason we are able to "defend" Ancestry's practices is because they are legal. Period. Morality and ethics have nothing to do with it.
This thread was started, if you will recall, by an individual who (in his own words)
"inadvertently signed up for a free trial"
but feels no responsibility for reading the terms of that trial contract, feels no responsibility for asking questions first if he wasn't comfortable with the trial, and feels no responsiblity for being competent enough to click the "Help" link or "MyAccount" link to get answers.
In other words, most if not all of those 841 complaints in the past 3 years are from complete poster-child morons who shouldn't be allowed online or own a credit card.